Diamond - Synthetics |
Posted/ Published | Author | Title | Source | Region | Keywords |
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DS1860-0029 1866 | Chancourtois, E.B.De. | Sur la Production Naturelle et Artificiel de Diamant | Academy of Science (PARIS) C.R., PP. 22-25. ALSO: PARIS: LES MONDES, P. 438. ALSO: American JOUR | Global | Diamond Synthesis, Mineral Resources |
DS1860-0338 1880 | Hannay, J.B. | Artificial Diamonds. #1 | Nature., Vol. 22, PP. 225-257. | Global | Diamond Synthesis |
DS1860-0946 1896 | Lacroix, A. | Diamant, 1896 | Mineralogie de la France et des Colonies, pp. 354-6. | Africa, Algeria | Diamond Synthesis |
DS1860-0342 1880 | Maskelyne, N.S. | The Asserted Artificial Production of the Diamond | Nature., Vol. 21, PP. 203-204. | Global | Synthetic |
DS1860-0416 1883 | Maskelyne, N.S. | Artficial Diamonds | Nature., Vol. 21, P. 260. ALSO: SOC. ARTS Journal of, Vol. 28, P. 289. | Global | Synthetic |
DS1860-0417 1883 | Maskelyne, N.S. | The Supposed Artificial Production of the Diamond | Chem. News, Vol. 41, PP. 4-5. | Global | Synthetic |
DS1860-0853 1894 | Moissan, H. | Nouvelles Experiences sur la Reproduction du Diamant | Academy of Science (PARIS), C.R., Vol. 117, PP. 320-326. | Global | Synthetics |
DS1860-0328 1880 | Nature | The Artificial Production of Diamond | Nature., Vol. 22, PP. 404-421. | Global | Synthetics |
DS1900-0655 1908 | Crookes, W.SIR. | Artificial Diamonds. #2 | Knowledge., Vol. 5, PP. 26-28. | Global | Diamond Synthesis |
DS1900-0751 1909 | Futrelle, J. | The Diamond Masters | Indianapolis: Bobbs-merrill, 212P. | Global | Kimberley, Fiction, Synthetic |
DS1900-0322 1905 | Handmann, P.R. | Der Diamant, das Vorkommen und die Entstehung Sowie die Kunstliche Erzeugung des Diamants. | Natur Und Kultur, Zeitschr. Fur Schule Und Leben., JAHR. 2, PP. 486-488. | Global | Geology, Diamond Occurrences, Diamond Genesis, Synthesis |
DS1900-0612 1908 | Knowledge | Artificial Diamonds ... Sir W. Crookes Experiments | Knowledge (London), Vol. 5, PP. 26-28. | Global | Synthesis |
DS1900-0197 1903 | Kunz, G.F. | Precious Stones: Diamonds - Kunz 1902 Part 2 | Mineral Resources of The United States For 1902: Part 2, Non, PP. 813-863. | Global | Drill Diamonds, Meteoritic, Synthesis, Irradiation |
DS1900-0334 1905 | Kunz, G.F. | Diamonds; the Mineral Industry During 1904 | The Mineral Industry During 1904, Vol. | United States, Arizona, Colorado Plateau | Genesis, Origin, Synthetic |
DS1900-0345 1905 | Moissan, F.F.H. | Nouvelles Recherches sur la Reproduction the du Diamant | Paris: Extrait Des Annual De Chem. Phys. 8th. Ser., Vol. 5, JUNE, 34P. | Global | Diamond Synthesis, Kimberley |
DS1900-0068 1901 | Moissan, H. | Sur Quelques Experiences Nouvelles Relatives a la Preparation du Diamant. | Academy of Science (PARIS) C.R., Vol. 133, PP. 206-210. | Global | Crystallography, Synthesis |
DS1900-0613 1908 | Nature | Artificial Diamonds. #3 | Nature., Vol. 78, P. 177. | Global | Synthesis |
DM1910-0641 1918 | Parsons, C.A. | The Formation of Diamond | Mining Magazine (London), JUNE, PP. 280-281. | Global | Diamond Synthesis |
DS1920-0068 1921 | Ennis, J. | The Origin of the Diamond (1921) | Mining Engineering Journal of South Africa, Vol. 32, PT. 2, Nov. 2ND. PP. 359-361; Vol. 31, PT. 1, Nov. | South Africa | Diamond Genesis, Synthesis |
DS1930-0102 1932 | Blank, E.W. | The Synthesis of the Diamond | Rocks And Minerals, Vol. 7, P. 143. | Global | Synthetic Diamond |
DS1960-0126 1961 | Bovenkerk, H.P. | Some Observations on the Morphology and Physical Characteristics of Synthetic Diamond. | American MINERALOGIST., Vol. 46, No. 7-8, PP. 952-963. | Global | Kimberlite, Synthetic |
DS1960-0736 1966 | Ringwood, A.E., Major, A. | Synthesis of Diamonds | Aust. Journal of Chem., Vol. 19, No. 10, PP. 1965-1969. | Australia | Synthetic Diamonds |
DS1970-0625 1973 | Arem, J.E. | Man Made Crystals | Washington: Smithsonian Institute Press, 109P. | Global | Kimberlite, Synthetic, Kimberley, Diamond |
DS1970-0855 1973 | Woods, G.S. | Macro and Microscopic Defects in Synthetic Diamonds - a Review | Diamond Research, pp. 25-27. | Global | Diamond Synthesis |
DS1975-0823 1978 | Nassau, K., Nassau, J. | The History and Present Status of Synthetic Diamond. Part Ii | Lapidary Journal, Vol. 32, No. 2, MAY PP. 490-508. | United States | Synthetic Diamonds |
DS1975-0612 1977 | Schumann, W. | Gemstones of the World | New York: Sterling Publishing Or Nag Press, 256P. | Global | Gemology, Kimberley, History, Synthetics |
DS1980-0132 1980 | Fu huifang, et al. | Morphological Pecularities of Synthetic Diamond and a Preliminary Discussion on its Fine Crystal Growth Field. | Geochimica., No. 1, PP. 23-30. | China | Diamond Synthesis |
DS1980-0204 1980 | Kuge, S., Koizumi, M., Miyamoto, Y., Takubo, H., Kume, S. | Synthesis of Prismatic and Tabular Diamond Crystals | Mineralogical Magazine., Vol. 43, PP. 579-581. | Global | Research, Diamond Morphology, Synthetic |
DM1981-0489 1981 | Collings, J. | New Frontiers in Diamond Synthesis | Optima, Vol. 30, No. 2, pp.100-11. | Global | Diamond Synthesis |
DS1982-0082 1982 | Bakon, A., Szymanski, A. | Morphological Qualitative Classification of Synthetic Diamond Microcrystals. | Mineral. Polonica., Vol. 13, No. 2, PP. 61-68. | Global | Diamond Synthesis |
DS1982-0149 1982 | Collins, A.T., Spear, P.M. | Optically Active Nickel in Synthetic Diamond | Journal of Physics, Sect. D. Applied Physics, Vol. 15, No. 12, PP. L183-L187. | Global | Synthetic Diamond, Geochemistry, Spectra Absorption |
DS1982-0182 1982 | Eash, D.M. | International Gemological Symposium : Proceedings 1982 | Gemological Institute of America, Santa Monica, CA, 568P. | Global | Diamonds, Genesis, Sources, Synthetics, Coloured Stones, Production |
DS1982-0247 1982 | Harding, R.R. | Production and Identification of Synthetic Gemstones | Institute of Mining and Metallurgy. Transactions, Vol. 91, SECT. A., PP. 130-131. | Global | Diamond Synthesis |
DS1982-0279 1982 | Hobbs, J. | Detecting Diamond Simulants | In: International Gemological Symposium Proceedings Volume, PP. 123-140. | Global | Synthetic, Kimberlite |
DS1982-0585 1982 | Strong, H.M. | Synthesis of Gem Quality Diamond | In: International Gemological Symposium Proceedings Volume, PP. 51-60. | Global | Synthetic, Kimberlite |
DS1982-0587 1982 | Sunagawa, I. | Gem Materials, Natural and Artificial | Current Topics In Material Science, Publishing North Holland Pub., Vol. No. 10, 144P. | Global | Diamond, Synthetic |
DS1982-0630 1982 | Welch, R.H. | The Role of Synthetic Diamonds in Drilling | Mining Engineering Journal of South Africa, Vol. 93, No. 41, Jan. PP. 26-35. | South Africa | Diamond Synthesis, Mining |
DM1983-0744 1983 | Anon. | Watching Diamonds Grow | The Times, AUGUST 10TH. | Global | Diamond Synthesis, Harwell |
DM1983-0762 1983 | Anon. | Grow Your Own | Financial Times, OCTOBER 4TH. | Global | Synthetic Diamonds |
DM1983-0763 1983 | Anon. | Growing Gems | Diamond News And South African Jeweller., Vol. 46, No. 12, SEPTEMBER P. 45. | Global | Synthetic Diamonds |
DS1983-0315 1983 | Houghton, J. | Science in Action | Tellex Report; Internal Bpi From Bbc World., BPI No. TMO336, No. 1715 AUGUST 12TH. 3P. | Global | History, Diamonds, Synthesis |
DS1983-0477 1983 | Nelson, R., Hudson, J.A., Mazey, D.J., Piller, R.C. | Diamond Synthesis; Internal Growth During Carbon Ion Implantation | Royal Soc. London Proceedings, Series A., Vol. 386, No. 1790, PP. 211-222. | Global | Synthesis |
DS1984-0250 1984 | Dyer, H. | De Beers Diamond Synthesis 25th. Anniversary 1959-1984 | Indiaqua., No. 39, 1984/III, PP. 11-15. | South Africa | Diamond Synthesis |
DS1984-0281 1984 | Frankkamenetskii, D.A. | The Theory and Growth of Unstable Phases and the Problem Of synthesis of Diamonds. | Khim. Fiz., Vol. 3, No. 3, PP. 318-331. | Russia | Diamond Synthesis |
DS1984-0419 1984 | Koivula, J.I., Fryer, C.W. | Identifying Gem Quality Synthetic Diamonds: an Update | Gems And Gemology, Vol. 20, No. 3, FALL PP. 146-158. | Global | Synthetic |
DS1984-0604 1984 | Recker, K. | Synthetische Diamantent | Zeitschrift Der Deutschen Gemmologischen Gesellschaft., Vol. 33, No. 1-2, PP. 5-34. | Global | Synthetic |
DS1984-0617 1984 | Rossman, G., Kirschvink, J.L. | Magnetic Properties of Gem Quality Synthetic Diamonds | Gems And Gemology, Vol. 20, No. 3, FALL PP. 163-166. | Global | Synthetic |
DS1984-0753 1984 | Wakatsuki, M. | Synthesis Researches of Diamond | In: Material Science of the Earth's Interior Terra Science Publishing, pp. 351-374 | Global | Diamond Morphology, Synthetic |
DS1985-0419 1985 | Martovitskiy, V.P., Zadnerprovskiy, B.I., Bulenko, N.A. | The internal structure of synthetic diamonds with thread likeinclusions.(Russian) | Kristallografiya, (Russian), Vol. 30, No. 6, pp. 1203-1206 | Russia | Synthetic Diamonds, Diamond Morphology |
DS1985-0596 1985 | Sebba, F., Sugarman, N. | Did Burton Synthesize Diamonds in 1905 | Nature., Vol. 316, No. 6025, JULY 18TH. P. 220. | Global | Synthetic Diamonds |
DS1985-0600 1985 | Serebrya, N.R., Losev, V.G., Voronov, O.A., Rakmani, A.V., Yakol. | The Morphology of Diamond Crystals Synthesized from Hydrocarbons. a Technical Note. | Kristallogr., Vol. 30, No. 5, PP. 1026-1027. | Russia | Diamond Morphology, Synthetics |
DS1985-0738 1985 | Wong, J., Koch, E.F., Hejna, C.L., Garbausk, M.F. | Atomic and Microstructural Characterization of Metal Impurities in Synthetic Diamonds. | Journal of APPLIED PHYSICS, Vol. 58, No. 9, Nov. 1, PP. 3388-3393. | Global | Synthetic Diamond |
DS1986-0733 1986 | Shigley, J.E., Fritsch, E., Stockton, C.M., Koivula, J.J., Fryer | The gemological properties of the Sumitomo gem quality synthetic yellowdiamonds | Gems and Gemology, Vol. 22, winter pp. 192-208 | Global | Synthetic diamond |
DS1987-0056 1987 | Bindal, M.M., Singhal, S.K., Nayar, R.K., Chopra, R. | A study of the friability of synthetic diamonds | Journal of Material Sci.letters, Vol. 6, No. 9, September pp. 1945-1046 | Global | Synthetic diamond |
DS1987-0112 1987 | Collins, A.T., Stanley, M., Woods, G.S. | Nitrogen isotope effects in synthetic diamonds | Journal of Physics D. Applied physics, Vol. 20, No. 7, July 14, pp. 969-974 | Global | Synthetic diamond, luminescense, Petrology |
DS1987-0151 1987 | Devries, R.C. | Synthesis of diamond under metastable conditions | Annual Rev. Mater. Science, Vol. 17, pp. 161-187 | Global | Diamond synthesis |
DS1987-0152 1987 | Devries, R.C. | Synthesis of diamond under metastable conditions. (Review) | Annual Review Mater, Vol. 17 pp. 161-187 | Global | Synthetic diamond |
DS1987-0243 1987 | Gems & Gemology | Synthetic diamond | Gems and Gemology, Vol. 23, No. 2, Summer p. 44 | Global | Diamond synthesis |
DS1987-0820 1987 | Yakovlev, E.N., Voronov, O.A., Rakhmanina, A.V. | Polycrystalline diamond aggregates obtained by using hydrocarbons.(Russian) | Sverktverd. Mater.(Russian), No. 2, pp. 3-5 | Global | Diamond synthesis |
DS1988-0012 1988 | Andreev, A.V. | Role of the metal-graphite (diamond) interface in the mechanism of diamond synthesis.(Russian) | Sverkhtverd. Mater., (Russian), No. 5, pp. 5-9 | Russia | Diamond synthesis |
DS1988-0013 1988 | Angus, J.C., Hayman, C.C. | Low pressure metastable growth of diamond and 'diamondlike' phases | Science, Vol. 241, No. 4868, pp. 913-921 | Global | Diamond synthesis |
DS1988-0093 1988 | Bundy, P. | Synthesis of diamonds and studies in the high pressure region | Soviet Journal of Superhard Material, Vol. 10, No. 3, pp. 1-8 | Russia | Diamond synthesis |
DS1988-0118 1988 | Chalyi, V.T., Orap, A.A. | Mechano chemical principles for the development ofa superfinish polymeric composite based on diamond sand refractory compounds.(Russian) | Fiz. Khimiya Formir. Abraz., Mater. Instrum.(Russian), pp. 71-82 | Russia | Diamond application, Diamond synthesis |
DS1988-0156 1988 | Davis, R.F., Sitar, Z., Williams, B.E., Kong, H.S., Kim, H.J. et. | Critical evaluation of the status of the areas for future research regarding the wide band GAP semi-conductors diamond, gallium nitride and silicon carbide | Material Sci. Eng. B. Solid State Adv. Technol, Vol. B1, No. 1, Aug. pp. 77-104 | Global | Diamond synthesis |
DM1988-0797 1988 | Diamond News and South African Jeweller | New kind of diamond. (Synthetic) | Diamond News and South African Jeweler, No. 5, May p. 23 | Global | News item, Diamond synthesis |
DS1988-0230 1988 | Fukunaga, O., Nakamura, K. | Synthesis of diamond. *JAP | Patent: JPN Kokai Tokkyo Koho 88158126 A2, July 1, 1988 3p. JAP, | Global | Diamond synthesis |
DS1988-0244 1988 | Gems & Gemology | Diamond- imitation crystal | Gems and Gemology, Vol. 24, No. 4, Winter p. 241 | Global | Diamond synthesis |
DS1988-0254 1988 | Getman, A.F., Andreev, A.V., Vityuk, V.I. | Preparation of diamonds from various carbonaceous materials in the presence of metallic melts.(Russian) | Sverkhtverd. Mater., (Russian), No. 6, pp. 6-8 | Global | Diamond synthesis |
DM1988-0830 1988 | Industrial Minerals | Korean synthetic diamonds | Industrial Minerals, No. 255, December p. 77 | Global | News item, Diamond Synthesis |
DS1988-0357 1988 | Kitabatake, M., Wasa, K. | New diamond. Diamond synthesis - translation of Japanese article | National Technical Information Service N89-10169/5/XAD ( Nat. Aeronautics and Space Admin.) Wash, Sept. 13p | Global | Diamond synthesis |
DS1988-0428 1988 | Lyamkin, A.I., Petrov, E.A., Petrov, Ye. A., Ershov, A.P. | Production of diamonds from explosives | Soviet Physics, Vol. 33, No. 9, pp. 705-706. Abstract | Russia | Synthetic diamonds |
DS1988-0430 1988 | Madiba, C.C.P., Sellschop, J.P.F., Van Wyx, J.A. | Light volatiles in synthetic diamond analyzed by ion probes | Nucl. Instrum. Methods Phys. Res. Sect. B., Vol. B35, No. 3-4, 12(II) pp. 442-445 | Global | Diamond synthesis |
DS1988-0555 1988 | Prins. J.F. | Improved activation of boron Dopant atoms imprinted into diamond | Nucl. Instrum. Methods Phys. Res. Sect. B., Vol. B35, No. 3-4, 12(II) pp. 484-487 | Global | Diamond synthesis |
DS1988-0725 1988 | Vanenckevort, W.J.P., Lochs, H.G.M. | Photoluminescence determination of the nitrogen a -defect content indiamonds.(Russian) | Journal of Applied Physics, Vol. 64, No. 1, July 1, pp. 436-437 | Global | Diamond synthesis, Photoluminescence |
DS1989-0017 1989 | Albin, S., Watkins, L., Ravi, K., Yokota, S. | Diamond films for laser hardening | Appl. Phys. Letters, Vol. 54, No. 26, June 26, pp. 2728-2730 | Global | Diamond filM., Synthetic diamonds |
DM1989-1690 1989 | Asia Wall Street Journal | Asahi-GE venture. Artificial diamonds | Asia Wall Street Journal, August 31, vetted from Indiaqua, No. 54, 1989/III p. 63 | Global | News item, Diamond synthesis |
DS1989-0053 1989 | Bachmann, P.K., Messier, R. | Emerging technology of diamond thin films | Chemical and Engineering News, Vol. 67, No. 20, pp. 24-27, 30-39 | Global | Synthetic diamond, Review |
DS1989-0201 1989 | Calcote, H.F. | The role of ions in soot and diamond formation | American Chem. Soc. Div. Preprint, Vol. 34, No. 2, pp. 464-469 | Global | Diamond synthesis |
DS1989-0228 1989 | Carts, Y.A. | Lasers deposit diamond films. (Editorial) | Laser Foc. W., Vol. 25, No. 2, Feb. p. 444 | Global | Diamond synthesis |
DS1989-0233 1989 | Caveney, R.J. | Potential for diamond film.De Beers Diamond Research Laboratory Reportno. 29 | Indiaqua, No. 52, 1989/I, pp. 141-143 | Global | Diamond synthesis, News |
DS1989-0238 1989 | Celii, F.G., Butler, J.E. | Hydrogen-atom detection in the filament assisted diamond depositionenvironment | Appl. Phys. Letters, Vol. 54, No. 11, March 13, pp. 1031-1033 | Global | Diamond morphology, Diamond synthesis |
DS1989-0254 1989 | Chen Chia Fu, Huang, Yen C., Hosomi, S. | Growth of diamond seed crystals by microwave plasma CVD.*JAP | Hyomen, Gitjutsu, *JAP, Vol. 40, No. 2, pp. 295-300 | Japan | Diamond synthesis |
DS1989-0255 1989 | Chen Chia Fu, Huang, Yen.C., Hosomi, S., Yoshida, I. | Effect of oxygen addition on microwave plasma CVD of diamond from CH4-H2mixture | Mater. Res. Bulletin, Vol. 24, pp. 87-94 | Global | Diamond synthesis |
DS1989-0281 1989 | Collins, A.T., Kamo, M., Sato, Y. | Intrinsic and extrinsic cathodluminescence from single crystal diamonds grown by chemical vapordeposition | Journal of Phys. Cond, Vol. 1, No. 25, June 26, pp. 4029-4033 | Global | Diamond synthesis, CVD. |
DS1989-0291 1989 | Corcoran, E. | Don't try Tiffanys -thin diamond films capture the heart of industry.(editorial) | Scientific American, Vol. 261, No. 2, August pp. 60- | Global | CVD., Diamond synthesis |
DS1989-0446 1989 | Fritsch, E., Connor, L., Koivula, J.I. | A preliminary gemological study of synthetic diamond thin films | Gems and Gemology, Vol. 25, No. 2, Summer pp. 84-90 | Global | Diamond Synthesis |
DS1989-0490 1989 | Gems & Gemology | Recent advances in gem diamond synthesis | Gems and Gemology, Vol. 25, No. 1, Spring p. 50 | Global | Diamond synthesis |
DS1989-0491 1989 | Gems & Gemology | Synthetic diamond vs. cubic zirconia | Gems and Gemology, Vol. 25, No. 1, Spring p. 50 | Global | Diamond synthesis |
DS1989-0492 1989 | Gems & Gemology | Synthetic diamonds by detonation | Gems and Gemology, Vol. 25, No. 1, Spring p. 50 | Global | Diamond synthesis |
DS1989-0496 1989 | Gems & Gemology | Imitations from Africa - fake diamond octahedra( synthetic cubiczirconia) | Gems and Gemology, Vol. 25, No. 1, Spring p. 50 | Namibia | Diamond synthesis |
DS1989-0581 1989 | Hannssen, L.M., Carrington, W.A., Butler, J.E., Snail, K.A. | Diamond synthesis using an oxygen acetylene torch | Material Letters, Vol. 7, No. 7-8, Dec. pp. 289-292 | Global | Diamond synthesis |
DS1989-0639 1989 | High Tech Materials Alert | Very high quality diamonds from a 'dirty' process | High Tech Materials Alert, Vol. 6, No. 9, September pp. 1-4, 7 | Global | CVD., Diamond synthesis |
DS1989-0656 1989 | Hong Kong Standard | Sumitomo's synthetic diamonds | Hong Kong Standard, August 31, vetted from Indiaqua, No. 54, 1989/III p. 63 | Global | News item, Diamond synthesis |
DS1989-0694 1989 | Ito, T. | Method and apparatus for synthesis of diamond | Patent: Europe No. 305903 A1 March 8, 1989, 8p | Global | Diamond synthesis |
DS1989-0744 1989 | Kanda, H., Ohsawa, T., Fukunaga, O., Sunagawa, I. | Effect of solvent metals upon the morphology of synthetic diamonds #1 | Journal of Crystal Growth, Vol. 94, pp. 115-124 | Global | Diamond synthesis, Diamond morphology |
DS1989-0956 1989 | Matsuda, J., Nagao, K. | Noble gas emplacement in shock produced diamonds | Geochimica et Cosmochimica Acta, Vol. 53, pp. 1117-1121 | Global | Diamond Synthesis, Ureilites |
DS1989-1088 1989 | Nam, T.L., Fallon, P.J., Keddy, R.J., Vanrijn, H.J. | Detection of nuclear radiation by scintillation-counting using syntheticdiamond | Appl. Rad. Is, Vol. 40, No. 8, pp. 657-661 | Global | Diamond synthesis |
DS1989-1103 1989 | Neifeld, R.A. | Manufacture of industrial grade diamonds | National Technical Information Service Pat. Appl. 451698 AO May 1, . 1990 7p/ National Technical Information Service order No. Pat appl/ -7-451, 7p | Global | Diamond synthesis, Laser radiation diamond |
DS1989-1104 1989 | Neifeld, R.A. | Method of growing industrial grade diamond | Patent application -7-451698, available National Technical Information Service Patent application PC NO, Filed Dec. 18, 1989 7p | Global | Synthetic diamond |
DS1989-1123 1989 | Niedbalska, A. | Low-pressure static diamond synthesis from carbonatized organiccompounds | Geological Association of Canada (GAC) Annual Meeting Program Abstracts, Vol. 14, p. A116. (abstract.) | Global | Diamond synthetic |
DS1989-1221 1989 | Pinneo, J.M. | CVD diamond- new material, new applications | Photon. Spec, Vol. 23, No. 10, October p. 123 | Global | Synthetic diamonds, Diamond synthesis |
DS1989-1221 1989 | Pinneo, J.M. | CVD diamond- new material, new applications | Photon. Spec, Vol. 23, No. 10, October p. 123 | Global | Synthetic diamonds, Diamond synthesis |
DS1989-1222 1989 | Pinneo, M. | Low-pressure nucleation routes. Diamond films | Nature, Vol. 342, December 14, p. 735-736 | Global | Diamond synthesis, CVD. |
DS1989-1325 1989 | Sahoo, N. | Theory of structure and hyperfine properties of anomalous muonium in | Phys. Rev. B., Vol. 39, No. 18, June 15, pp. 3389-3410 | Global | Diamond synthesis, Muonium/germaniuM. |
DS1989-1348 1989 | Scarratt, K. | Notes: How to read absorption curves. Describes10 de Beers synthetic yellow diamonds | Journal of Gemology, Vol. 21, No. 6, pp. 339-346 | Global | Diamond synthesis, FTIR spectrometer |
DS1989-1382 1989 | Shigley, J.E., Fritsch, E. | Comparison of natural and synthetic diamond | Diamond Workshop, International Geological Congress, July 15-16th. editors, pp. 96-99. Abstract | Global | Diamond morphology, Natural, Synthetic diamond |
DM1989-1945 1989 | South China Morning Post | Growing diamond crystals from sewer gas.. | Indiaqua, No. 52, 1989/I, p. 43. (Jan. 1st.) | United States | News item, Diamond synthesis |
DS1989-1440 1989 | Spear, K.E. | Chemical and energetic aspects of CVD diamond growth | American Chem. Soc. Div. Preprint, Vol. 34, No. 2, pp. 436-443 | Global | Diamond synthesis, CVD. |
DS1989-1462 1989 | Strong, H.M. | Early diamond making at General Electric | American Journal of Physics, Vol. 57, No. 9, September pp. 794-802 | Global | Diamond synthesis, History |
DS1989-1510 1989 | Trefilov, V.I., Mikhalenkov, V.S., Savvakin, G.I., Tsapko, E.A. | Structural char. of ultrafine diamonds and hypothetical mechanism of their formation under nonequil conditions of detonating carbon.(Russian) | Doklady Academy of Sciences Akademy Nauk SSSR, (Russian), Vol. 305, No. 1, pp. 85-90 | Russia | Diamond synthesis |
DS1989-1516 1989 | Tsai, J.W., Yu, S.C. | Diamond synthesis from vapors at low pressure conditions | Geological Association of Canada (GAC) Annual Meeting Program Abstracts, Vol. 14, p. A116. (abstract.) | Global | Diamond synthetic |
DS1989-1535 1989 | Vakil, H.B., Banholze.., W.F., Kehl, R.J. | An experimental investigation of the isotope effect in the CVD growth ofdiamonds | Mater. Res. Bulletin, Vol. 24, No. 6, June pp. 733-738 | Global | CVD Diamond morphology, Diamond synthetic |
DS1989-1577 1989 | Walton, K.R., Dismukes, J.P., Krueger, R.A., Field, F.R. III, Clark | Technology assessment for CVD-diamond-coated cutting tool inserts | Materials and Society, Vol. 13, No. 3, pp. 319-350 | Global | Diamond synthesis, CVD -overview/good refs |
DS1990-0106 1990 | Akaishi, M., Kanda, H., Yamoka, S. | Synthesis of diamond from graphite-carbonate systems under very high temperature and pressure | Journal of Crystal Growth, Vol. 104, pp. 578-581 | Global | Diamond synthesis, Experimental mineralogy |
DS1990-0199 1990 | Bi, Xiang Xin, Eklund, P.C., et al. | Optical properties of chemical vapour deposited diamond films | Journal of Material Research, Vol. 5, No. 4, pp. 811-817 | Global | Diamond synthesis, CVD. |
DM1990-1687 1990 | Diamond News and South African Jeweller | De Beers Research Lab. Report no. 32 -diamond research -quo vadis? | Diamond News and South African Jeweller, No. 6, June p. 49-50 | South Africa | News item, Diamond synthesis |
DS1990-0510 1990 | Galli, G., Martin, R.M., Car, R., Parrinello, M. | Melting of diamond at high pressure | Science, Vol. 250, December 14, pp. 1547-1549 | Global | Diamond synthesis, Thermal conductivity |
DS1990-0525 1990 | Geballe, T.H., Pohl, R.O., Seitz, R. | Cool diamonds. Letters to Science in response to E. Marshall's article | Science, Vol. 250, November 30, pp. 1194-1195 | Global | Diamond synthesis, Thermal conductivity |
DS1990-0690 1990 | High Tech Materials Alert | Diamond semiconductor limits | High Tech Materials Alert, please note CVD not normally covered in refs., Vol. 7, No. 1, January p. 3 | Global | News item, Diamond synthesis |
DS1990-0691 1990 | High Tech Materials Alert | Ever closer to perfect diamond films | High Tech Materials Alert, please note CVD not normally covered in refs., Vol. 7, No. 10, October p. 2 | Global | News item, Diamond synthesis |
DS1990-0692 1990 | High Tech Materials Alert | Major diamond breakthroughs- Norton achieves 1 mm diamond coatings | High Tech Materials Alert, please note CVD not normally covered in refs., Vol. 7, No. 11, November p. 1 | Global | News item, Diamond synthesis |
DS1990-0693 1990 | High Tech Materials Alert | Diamond films, faster and cheaper | High Tech Materials Alert, please note CVD not normally covered in refs., Vol. 7, No. 12, December p. 1 | Global | News item, Diamond synthesis |
DS1990-0694 1990 | High Tech Materials Alert | Superplastically formed ZnS/diamond composites | High Tech Materials Alert, please note CVD not normally covered in refs., Vol. 7, No. 3, March p. 2, 3 | Global | News item, Diamond synthesis |
DS1990-0695 1990 | High Tech Materials Alert | Diamond theory- concentration of energy vacancies | High Tech Materials Alert, please note CVD not normally covered in refs., Vol. 7, No. 4, April p. 7 | Global | News item, Diamond synthesis |
DS1990-0696 1990 | High Tech Materials Alert | New diamond deposition process | High Tech Materials Alert, please note CVD not normally covered in refs., Vol. 7, No. 7, July p. 8 | Global | News item, Diamond synthesis |
DS1990-0697 1990 | High Tech Materials Alert | GE achieves new diamond properties.. more thermally conductive and more laser resistant | High Tech Materials Alert, please note CVD not normally covered in refs., Vol. 7, No. 8, August p. 3 | Global | News item, Diamond synthesis |
DS1990-0698 1990 | High Tech Materials Alert | Larger diamonds from Sumitomo 5 to 9 carats | High Tech Materials Alert, please note CVD not normally covered in refs., Vol. 7, No. 9, September p. 8 | Global | News item, Diamond synthesis |
DM1990-1741 1990 | Ingrassia, L. | How secret GE recipe for making diamonds may have been stolen | Wall Street Journal, Wednesday Feb. 28, pp. A1 and A4 | Global | News item, Diamond synthesis |
DS1990-0958 1990 | Lundblad, E. | Swedish synthetic diamond scooped the world 37 years ago | Indiaqua, No. 55 1990/1, pp. 17, 19-21, 23 | Sweden | Synthetic diamond, History |
DS1990-0989 1990 | Marshall, E. | GE's cool diamonds.. prompt warm words | Science, Vol. 250, October 5, pp. 25-26 | Global | Diamond synthesis, Sietz |
DS1990-1049 1990 | Miller, H.G. | A synthesis of the geophysical characteristics of terranes in easternCanada | Tectonophysics, Vol. 177, pp. 171-191 | Appalachia | Geophysics, Synthesis |
DS1990-1088 1990 | National Academy Press | Diamond and diamond like materials: an emerging technology | National Academy Press, Washington, D.C., | Global | Diamond synthesis, CVD. |
DS1990-1089 1990 | National Materials Advisory Board | Status and applications of diamond and diamond like materials: an emergingtechnology | National Academy Press, copy held Canmet, 115p. Table of contents on file | Global | Diamond uses, Diamond synthesis |
DS1990-1092 1990 | Nato | Advances study Institute diamond and diamond like films and coatings | National Technical Information Service, AD-A225 517, (Geological Society of Canada (GSC) Listing) | Global | Diamond synthesis, CVD. |
DS1990-1293 1990 | Saito, Y., Sato, K., Gomi, K., Miyadera, H. | Diamond synthesis from CO-H2 mixed gas plasma | Journal of Material Science, Vol. 25, No. 28, February pp. 1246-1250 | Global | Diamond synthesis, Gas plasma |
DS1990-1324 1990 | Science | Diamond: glittering prize for materials science | Science, Vol. 250, December 21, pp. 1640-1641 | Global | Diamond synthesis, Overview -brief |
DS1990-1368 1990 | Singh, B.P., Gupta, S.K., Dhawan, U., Lal, K. | Characterization of synthetic diamonds by EPR and X-raydiffractiontechniques | Journal of Material Science, Vol. 25, No. 28, February pp. 1487-1490 | Global | Diamond synthesis, EPR and X-ray diffraction |
DM1990-1904 1990 | Skillings Mining Review | Diamond films: a technology impact report. No. T013,Publishing Frost and Sullivan Inc. 106 Fulton Street N.Y.10038 $ 990.00 United States | Skillings Mining Review, Vol. 79, No. 8, February 24, p. 19 | Global | News item, Diamond synthesis |
DS1990-1418 1990 | Stinson, S. | GES new diamonds have unusual properties | Chem. Eng, Vol. 68, No. 29, July 16, p. 5 | Global | Diamond morphology, Diamond synthesis |
DS1990-1482 1990 | Tsai, J.W., Yu, S.C. | Diamond synthesis from vapours at low pressure conditions | Process Mineralogy IX: editors, Petruk, W., Hagni, R.D. et al. TMS, No. IX:, pp. 607-614 | Global | Diamond synthesis, Diamond crystallography |
DS1990-1527 1990 | Waggoner, J. | GE produces a better diamond | Photon. Spec, Vol. 24, No. 8, August p. 34- | Global | Diamond, Synthetic diamond |
DS1990-1580 1990 | Woods, G.S., Vanwyk, J.A., Collins, A.T. | The nitrogen content of type 1B synthetic diamond | Phil. Magazine B., Vol. 62, No. 6, December pp. 589-595 | Global | Diamond synthesis, Nitrogen |
DS1990-1608 1990 | Yarbrough, W.A., Messier, R. | Current issues and problems in the chemical vapor deposition of diamond | Science, Vol. 247, pp. 688-696 | Global | Diamond synthesis, Review |
DS1991-0021 1991 | Amato, I. | GE achieves dial an isotope diamond | Science, Vol. 254, November 1, p. 653 | Global | News item, Synthetic diamonds |
DS1991-0242 1991 | Caveney, R.J. | Scientists at de Beers laboratory have successfully synthesized a 14, 2carat stone. Largest yet manufactured | Indiaqua, Industrial Diamond ANNUAL, 1991 p. 246 | South Africa | News item, Diamond synthesis |
DS1991-0516 1991 | Fritsch, E. | Synthetic diamond thin films: the potential impact on the gem trade | International Gemological Symposium, June 20-24, 1991 Los Angeles, Gems and Gemology, Vol. 27, Spring, Program p. 1 | Global | Diamond synthesis, CVD. |
DM1991-2078 1991 | Industrial Minerals | Soviet synthetic diamonds | Industrial Minerals, No. 284, May p. 68 | Russia | News item, Synthetic diamonds |
DS1991-0908 1991 | Koivula, J.I., Kammerling, R.C. | Gem-quality synthetic diamonds from the USSR | Gems and Gemology, Gem News, Vol. XXVII, Spring p. 46 | Russia | News item, Synthetic diamonds |
DS1991-0938 1991 | Kulakova, I.I., Rudenko, A.P., Skvortsova, V.I. | The formation kimberlite diamonds through chemical synthesis in open catalytic system | Proceedings of Fifth International Kimberlite Conference held Araxa June 1991, Servico Geologico do Brasil (CPRM) Special, pp. 533-534 | Russia | Synthetic diamond, Crystallography |
DS1991-0950 1991 | Lang, A.R., Moore, M., Makepeace, A.P., Wierzchov, W. | On the dilation of synthetic type 1B diamond by substitutional nitrogenimpurity | Phil. Transactions Roy. A., Vol. A 337, No. 1648, Dec. 16, pp. 497-520 | Global | Diamond synthesis, Nitrogen impurity |
DS1991-1076 1991 | Matsuda, J., Fukunaga, K., Ito, K. | Noble gas studies in vapor growth diamonds: comparison with shock produced diamonds and the origin of diamonds in ureilites | Geochimica et Cosmochimica Acta, Vol. 55, pp. 2011-2023 | Global | Synthetic diamonds, CVD., Ureilites |
DS1991-1409 1991 | Regis, E. | Diamonds in the rough. Earth has been making diamonds since the dawn oftime. John Angus has been making them since the 1960's. He may have found a better way | Discover, Vol. 12, No. 3, March pp. 66-71 | Global | Synthetic diamonds, CVD. |
DS1991-1567 1991 | Shigley, J.E. | Gemological properties of gem-quality synthetic diamonds grown by high pressure methods | International Gemological Symposium, June 20-24, 1991 Los Angeles, Gems and Gemology, Vol. 27, Spring, Program p. 1 | Global | Diamond morphology, Synthetic diamonds |
DS1991-1675 1991 | Sunagawa, I. | Basic concept in the identification of natural and synthetic diamonds | Xiii International Gemmological Conference Held South Africa, Stellenbosch, 2p.abstract | Global | Diamond mineralogy, Synthetic diamonds |
DM1992-1820 1992 | Diamond News and South African Jeweller | Costly carbon.. synthetic diamonds | Diamond News and South African Jeweller, No. 3, p. 31 | Global | News item, Synthetic diamonds |
DS1992-0459 1992 | Field, J.E. | The properties of natural and synthetic diamond | Academic Press, second edition, 710p. approx. $ 200.00 | Global | Diamond morphology, Diamond synthesis |
DS1992-0598 1992 | Graebner, J.E., Jin, S., Kammlott, G.W., Herb, J.A., Gardiner, C.F. | Large anisotropic thermal conductivity in synthetic diamond films | Nature, Vol. 359, No. 6394, October 1, pp. 401-402 | Global | Diamond synthesis, CVD. |
DS1992-0648 1992 | Haggin, J. | Carbon nitride, Beta-C3N4 developed by researchers at Northwestern University may be harder than diamond | Chem. Eng. News, Vol. 70, No. 21, May 25, p. 20. # HV 770 | Global | Synthetic diamond, Industrial use |
DS1992-1159 1992 | Palyanov, Yu.N., Malinovskiy, I.Yu., Borzdov, Yu.M., Khokhryakov | Use of the split sphere apparatus for growing large diamond crystals without the use of a hydraulic press. | Doklady Academy of Sciences USSR, Earth Science Section, Vol. 315, pp. 233-237. | Russia | Diamond synthesis |
DS1992-1217 1992 | Ponahlo, J. | Cathodluminescence (CL) and CL spectra of de Beers' experimental syntheticdiamonds | Journal of Gemology, Vol. 23, No. 1, January pp. 3-18 | Global | Synthetic diamonds, Chlorine, Cathodluminescence |
DS1992-1271 1992 | Requeiro, M.N. | Diamond from fullerenes | Advanced Materials, Vol. 4, No. 6, June pp. 438-440. # JB802 | Global | Fullerenes, Diamond synthesis |
DS1992-1564 1992 | Travis, J. | A gem of a diamond beater | Science, Vol. 256, No. 5055, April 17, p. 307 | Global | Synthetic diamonds, Carbon |
DS1993-0015 1993 | Akaishi, M., Kanda, H., Yamaoka, S. | Phosphorous: an elemental catalyst for diamond synthesis and growth | Science, Vol. 259, No. 5101, March 12, pp. 1592-1593 | Global | Diamond synthesis |
DS1993-0147 1993 | Bovenkerk, H.P., et al. | Errors in diamond synthesis | Nature, Vol. 365, No. 6441, September 2, pp. 19-21 | Global | Diamond synthesis |
DS1993-0156 1993 | Bradley, D. | Whats harder than diamond | New Scientist, Vol. 137, No. 1865, March 20, pp. 22-23 | Global | Diamond synthesis |
DM1993-1924 1993 | Diamond News and South African Jeweller | Brief note on microwave produced diamonds | Diamond News and South African Jeweller, No. 2, February, p. 25 | Global | News item, Diamond synthesis |
DM1993-1974 1993 | Gem News International | Sumitomo Electric synthesizes high-purity diamonds | Gems and Gemology, Gem News, Vol. 29, Fall, pp. 208. | Japan | Diamond morphology, Synthetic diamonds |
DM1993-1975 1993 | Gem News International | Gemological Institute of America (GIA) says Russian gem-quailty | Gems and Gemology, Gem News, Vol. 29, Fall, pp. 207-208. | Russia | Diamond morphology, Synthetic diamonds |
DS1993-0909 1993 | Lewtwyle, K. | A girl's best friend... diamond continues to resist efforts at economicsynthesis. | Scientific American, Vol. 269, No. 6, December, p. 40-. | Global | Economics, Diamond synthesis |
DS1993-1452 1993 | Shigley, J.E., Fritsch, E., Reinitz, I. | Two near colorless general electric type IIA synthetic diamond crystals | Gems and Gemology, Notes and New Techniques, Vol. 29, Fall, pp. 191-196. | Global | Diamond morphology, Synthetic diamonds |
DM1993-2417 1993 | Teslenko, V. | Beware: Russia sells "man-made' diamonds | Mazal U'Bracha, No. 53, August-September pp. 58, 60, 61 | Russia, Commonwealth of Independent States (CIS) | Synthetic diamonds, Economics |
DS1993-1701 1993 | Watts, S. | Anyone for cheap diamond film? | New Scientist, Vol. 138, No. 1874, May 22, pp. 39-42. | Global | CVD., Diamond synthesis |
DS1993-1736 1993 | Willmott, R. | Diamond replicas- possible but just | Journal of Gemology, Vol. 23, No. 8, October pp. 486-490. | Global | Diamond synthesis |
DM1994-2070 1994 | Diamond International | Russia steps up synthetic production | Diamond International, May-June p. 33. | Russia | News item, Diamond synthesis |
DS1994-0595 1994 | Gems & Gemology | Near colorless Russian synthetic diamond examined | Gems and Gemology, Vol. 30, Summer pp. 123, 124. | Russia | Diamond color, Synthetic diamonds |
DM1994-2174 1994 | Helmer, J. | Synthetics dilemma for Russia | Diamond International, March-April pp. 55, 56. | Russia | Diamond synthesis, Economics |
DS1994-1016 1994 | Lee, S.S., Minsek, D.W., Vestyck, D.J., Chen, P. | Growth of diamond from atomic hydrogen and a supersonic free jet of methylradicals. | Science, Vol. 263, March 14, pp. 1596-1598. | Global | Diamond synthesis |
DS1994-1329 1994 | Palynamov, Y.N., et al. | Inclusions in synthetic diamonds (Russian) | Doklady Academy of Sciences Nauk SSR, (Russian), Vol. 338, No. 1, Sept. pp. 78-80. | Russia | Diamond synthesis, diamond inclusions |
DM1994-2639 1994 | Scarratt, K., DuTroit, G., Sersen, W. | Russian synthetics examined | Diamond International, March-April pp. 45, 46, 49, 50, 52. | Russia | Diamond synthesis, Morphology |
DS1994-1589 1994 | Shigley, J.E., Fritsch, E., Koivula, J.I., Sobolev, N.V. | The gemological properties of Russian gem quality synthetic yellowdiamonds. | Gems and Gemology, Vol. 29, Winter, pp. 228-248. | Russia | Synthetic diamonds, Colour -yellow |
DS1995-0232 1995 | Bulletin, S.J., Chalker, P.R. | high pressureerformance diamond and diamond like coatings | Journal of Metals (JOM), Vol. 47, No. 4, April pp. 16-19. | Global | Diamond synthesis |
DS1995-0339 1995 | Collins, A. | Diamonds designed to order could inspire the next generation of particle detectors and laptop computers. | New Scientist, Vol. 348, No. 2001, Oct. 28, pp. 36-39. | Global | Diamond synthesis |
DS1995-0606 1995 | Gems & Gemology | Diamonds grown from liquid at 1 atm. extract from Diamond Industry Week | Gems and Gemology, Vol. 31, Winter pp. 296. | Global | Diamond synthetic |
DS1995-0609 1995 | Gems & Gemology | Treated color red - synthetic diamonds | Gems and gemology, Gem Trade Notes, Vol. 31, Spring, p. 53-4. | Global | Mineralogy, Diamond synthesis |
DS1995-0613 1995 | Gems & Gemology | Synthetic diamonds misrepresented as Canadian rough...from Saskatchewan | Gems and Gemology -Gem News, Vol. 31, summer p. 129. | Saskatchewan | Diamond synthesis, Diamond fraud |
DS1995-0973 1995 | Klages, C-P. | Metastable diamond synthesis; principles and applications | European Journal of Mineralogy, Vol. 7, No. 4, August pp. 767-774. | Global | Diamond synthesis |
DS1995-1341 1995 | New Scientist | Little gems... diamonds designed to order could inspire the next generation of particle detectors... | New Scientist, Vol. 148, No. 2001, Oct. 18, pp. 36-39. | Global | Diamond synthesis |
DS1995-1805 1995 | Sosso, F. | Some observations on a gem quality synthetic yellow diamond produced in the region of Vladimir (Russia). | Journal of Gemology, Vol. 24, No. 5, Jan. pp. 363-368. | Russia | Diamond morphology, Diamond synthesis |
DS1995-2018 1995 | Wallich, P. | A widgets best friend - diamonds may bring new a new facet to motors andsensors. | Scientific American, Vol. 272, No. 4, April p. 35. | Global | Diamond synthesis |
DS1996-0268 1996 | Chepurov, A.I., Sonin, V.M., Khokhryakova, I.P. | Interaction of free state metals with diamond under high temperatureannealing. | Russian Geology and Geophysics, Vol. 36, No. 7, pp. 61-68. | Russia | Diamond synthesis |
DM1996-1702 1996 | Diamantaire | De Beers unveils synthetic detectors. #2 | Diamantaire, No. 47, November p. 9. | Global | News item, Synthetic diamonds |
DS1996-0501 1996 | Gems & Gemology | A notable yellow synthetic diamond from Russia | Gems and Gemology, Lab Notes, Vol. 32, Spring p. 44. | Russia | News item, Diamond synthesis |
DS1997-0836 1997 | Nassau, K., McClure, S.F., Elen, S., Shigley, J.E. | Synthetic moissanite: a new diamond substitute | Gems and Gemology, Vol. 33, winter, pp. 260-275. | Global | Diamond synthesis, Moissanite |
DS1997-0881 1997 | Palyanov, Y.N., Borzdov, Sokol, Khokhryakov, Gusev .. | Dislocation free monocrystals of sythetic diamond | Doklady Academy of Sciences, Vol. 353, No. 2, Feb-Mar, pp. 243-6. | Global | Diamond - synthetics, crystallography |
DS1997-0882 1997 | Palyanov, Y.N., Khokhryakov, A., Borzdov, Sokol et al. | Growth conditions and real structure of synthetic diamond crystals | Russian Geology and Geophysics, Vol. 38, No. 5, pp. 920-45. | Global | Diamond morphology, Synthetics |
DS1997-0883 1997 | Palyanov, Y.N., Sokol, A.G., Borzdov, et al. | Synthesis and characterization of diamond single crystals up to 4 carats | Doklady Academy of Sciences, Vol. 355A, No. 6, July-Aug. pp. 856-61. | Russia | Diamond morphology, Diamond synthesis |
DS1997-1162 1997 | Tomilenko, A.A., Chepurov, Turkin, Shebanin, Sobolev | Fluid inclusions in synthetic diamond crystals | Doklady Academy of Sciences, Vol. 353, No. 2, Feb-Mar, pp. 247-50. | Global | Diamond - synthetics, crystallography |
DS1998-0193 1998 | Butler, J.E. | Chemical vapor deposition of diamond: synthesis in partial vacuums | Ima 17th. Abstract Vol., p. A11. abstract | Global | CDV, Diamond synthesis |
DS1998-0237 1998 | Chatham, T.H. | Created gemstones, past, present and future. Presentation Can. Gemollogical Association mentions diamond | Canadian Gemologist, XIX, No. 1, Spring pp. 8-12. | Russia | Diamond synthesis |
DS1998-0332 1998 | De, S., Heaney, P.J., Vincenzi, E.P., Hargraves, R.B. | Microstructural comparison between natural polycrystalline diamond -carbonado and artificial.. | Ima 17th. Abstract Vol., p. A16. poster abstract | Brazil, Central African Republic | Carbonado, Diamond synthesis |
DS1998-0626 1998 | Hodgkinson, A. | Diamond distinction from synthetic moissanite - in the dark | Canadian Gemologist, XIX, No. 2, Summer pp. 59-60. | Global | Diamond synthesis, Moissanite |
DS1998-0871 1998 | Li, Y., Qian, Y., Zhou, G. | A reproduction pyrolysis catalysis synthesis of diamond | Science, Vol. 281, No. 5374, July 10, pp. 246-7. | Global | Diamond - synthetic |
DS1999-0083 1999 | Bosshart, G., Smith, C.P. | Synthetic blue diamonds hit the market | Rapaport Diamond Report, Vol. 22, No. 20, June 4, pp. 114-6. | Global | Review - Gems and Gemology Fall 2000 p. 285., Diamond synthetics |
DM1999-0944 1999 | Financial Post | Scientists make gem quality diamonds in the laboratory... heat and pressureused. | Financial Post, Aug. 19, 1p. | Russia, United States | Diamond synthesis, History |
DS1999-0242 1999 | Gems & Gemology | Synthetic diamonds widely available... Russian Coloured Stone Co | Gems and Gemology Gem News, Spring, p. 47, 48. | Russia | News item, Synthetic diamonds |
DS1999-0302 1999 | Hazen, R.M. | The diamond makers | Cambridge, 258p. $ 20.00 United States paperback | Global | Update on The Alchemists, Diamond synthesis |
DS2000-0101 2000 | Borzdov, Y.M., Sokol, Palyanov, Khokhryakov, Sobolev | Growth of synthetic diamond monocrystals weighing up to six carats and perspectives of their application. | Doklady Academy of Sciences, Vol. 374, No. 7, Sept-Oct. pp. 1113-5. | Russia | Diamond - morphology, Diamond - synthesis, Crystallography |
DS2001-0363 2001 | Gem Trade Lab Notes | Diamond: synthetic diamond with distinctive surface features | Gems and Gemology, Gem trade lab notes, Vol. 37, spring, p. 60. | Global | Diamond - synthesis |
DS2002-0145 2002 | BetterThanDiamond.com | Takara lab grown gem grade fancy yellow diamonds now available for sale | BetterThanDiamonds, May 29, 2p., May 29, 2p. | Global | News item - press release, Synthetic diamonds |
DS2002-0146 2002 | BetterThanDiamond.com | Takara lab grown gem grade fancy yellow diamonds now available for sale | BetterThanDiamonds, May 29, 2p., May 29, 2p. | Global | News item - press release, Synthetic diamonds |
DS2002-0382 2002 | Digonskii, S.V., Shatagin, N.N. | Modeling natural diamond generation in high pressure chambers | Moscow University Geology Bulletin, Vol. 57, 1, pp. 49-51. | Global | Diamond synthesis |
DS2002-0692 2002 | Hearts on Fire | A milestone advertising campaign in the world of branded diamonds: Hearts on Fire national WOW campaign building its brand through local partnerships. | Hearts on Fire, Nov. 25, 1p. | Massachusetts | Press release, diamond synthesis |
DS2002-1460 2002 | Shigley, J.E., Abbaschian, R., Clarke, C. | Gemesis laboratory created diamonds. a study of the jewelry quality yellow synthetic diamonds being grown on a commercial scale by Genesis Corp. Sarasota Florida | Gems & Gemology, Vol. 38, 4, pp. 301-310. | Global | Diamond - synthesis, Economics |
DS2003-0078 2003 | Basavalingu, B. | Hydrothermal synthesis of diamond | Geological Society of India Journal, Vol. 61, 2, pp. 232-3. | Global | Diamond synthesis |
DS2003-0450 2003 | Gem Trade Lab Notes | LifeGem synthetic diamonds | Gems & Gemology, Vol. 39, 1, Spring, p. 62. | Global | Diamond - synthetic |
DM2003-1729 2003 | Herald Tribune Sarasota | Gemesis to micro-label its cultured diamonds | Herald Tribune, Dec. 16, 1p. | Global | News item - Gemesis Corporation, synthetics |
DM2003-1742 2003 | Idex Online | Synthetic diamonds are giving the industry yellow fever | Idex Magazine, No. 163, Nov. 16, 5p. | Global | News item - synthetic markets |
DS2003-0621 2003 | Irifune, T., Kurio, A., Sakamoto, S., Inoue, T., Suiniya, H. | Ultrahard polycrystalline diamond from graphite. Correction | Nature, No. 6923, Feb. 6, p. 599. also No. 6925, p. 806 Feb 20 | Global | Diamond synthesis |
DS2003-0787 2003 | Lee, S.T., Lifshitz, Y. | The road to diamond wafers | Nature, No. 6948, July 31, p. 500. | Global | Diamond - materials, synthesis |
DS2003-0838 2003 | Lomonosov, I.V., Fortov, V.E., Frolova, A.A., Khishchenko, K.V. | The simulation of transformation of graphite to diamond under conditions of dynamic | High Temperature, (Kluwer Publication), Vol. 41, 4, pp. 447-458. | Global | Diamond synthesis |
DS2003-0937 2003 | Meng, Y., Newville, M., Sutton, S., Rakovan, J., Mao, H-K. | Fe and Ni impurities in synthetic diamond | American Mineralogist, Vol. 88, 10, Oct. pp. 1555-69. | Global | Diamond - synthesis |
DS2003-1005 2003 | New Scientist | Harvesting diamonds from CO2 | New Scientist, No. 2405, July 26, p. 17. | Global | Diamond - synthesis |
DM2003-2082 2003 | Rapaport | Apollo Diamond to release CVD diamonds in Q4 | Rapaport News, August 11, 1/4p. | Global | Diamond synthesis, Apollo Diamond |
DM2003-2085 2003 | Rapaport | Conflict and synthetic diamonds - major threats to industry. Brief comments on keynote | Rapaport News, Nov. 3, 1/8p. | Global | News item - HTHP, CVD |
DM2003-2086 2003 | Rapaport | Sundance execs speak on HOHT. Only type IIa diamonds can be used to create | Rapaport, Dec. 12, 1/8p. | Global | News item - Sundance Diamonds |
DS2003-1191 2003 | Roy, R. | Diamond synthesis: a brief comment on the history | Current Science, Vol. 84, 2, Jan. 25, p. 129. | Global | Diamond - synthesis |
DS2003-1242 2003 | Scientific American | Working knowledge artificial diamonds | Scientific American, Vol 288, 2, Feb. pp. 82-3. | Global | Diamond synthesis |
DS200412-0311 2003 | Chapman, J. | Fundamentals of making synthetic diamonds. 500 million carats are produced annually. | Rough Diamond Review, No. 3, December, pp. | Technology | Diamond synthesis |
DS200412-0454 2002 | Digonskii, S.V., Shatagin, N.N. | Modeling natural diamond generation in high pressure chambers. | Moscow University Geology Bulletin, Vol. 57, 1, pp. 49-51. | Technology | Diamond synthesis |
DS200412-0514 2004 | Ekimov, E.A., Sidorov, V.A., Melnik, N.N., Gierlotka, S., Presz, A. | Synthesis of polycrystalline diamond in the boron carbide graphite and boron graphite systems under high pressure and temperatur | Journal of Materials Research, Vol. 39, 15, pp. 4957-4960. | Technology | Diamond synthesis |
DS200412-0619 2003 | Gem Trade Lab Notes | LifeGem synthetic diamonds. | Gems & Gemology, Vol. 39, 1, Spring, p. 62. | Technology | Diamond - synthetic |
DM200412-2422 2003 | Herald Tribune Sarasota | Gemesis to micro-label its cultured diamonds. | Herald Tribune, Dec. 16, 1p. | United States | News item - Gemesis Corporation, synthetics |
DM200412-2423 2004 | Herald Tribune Sarasota | Gemesis teams with jewelry maker. | Herald Tribune, Feb. 5, 1p. | United States | News item - Gemesis, synthetic diamonds |
DM200412-2423 2004 | Herald Tribune Sarasota | Gemesis teams with jewelry maker. | Herald Tribune, Feb. 5, 1p. | United States | News item - Gemesis, synthetic diamonds |
DM200412-2430 2003 | Idex Online | Synthetic diamonds are giving the industry yellow fever. | IDEX Magazine, No. 163, Nov. 16, 5p. | Technology | News item - synthetic markets |
DM200412-2479 2004 | Idex Online | GIA reveals progress in treated, synthetic diamonds. | Idex Online, June 13, 1p. | Technology | Diamond - synthetic identification |
DM200412-2486 2004 | Idex Online | Getting the full treatment. HPHT history.. process that could improve a color of a diamond. | Idex Online, Feb. 29, 3p. | Technology | Synthetic diamonds |
DS200412-1105 2003 | Lee, S.T., Lifshitz, Y. | The road to diamond wafers. | Nature, No. 6948, July 31, p. 500. | Technology | Diamond - materials, synthesis |
DS200412-1171 2003 | Lomonosov, I.V., Fortov, V.E., Frolova, A.A., Khishchenko, K.V., Charakhchyan, A.A., Shurshalov, L.V. | The simulation of transformation of graphite to diamond under conditions of dynamic compression in a conic target. | High Temperature, Vol. 41, 4, pp. 447-458. | Technology | Diamond synthesis |
DS200412-1233 2004 | Martineau, P.M., Lawson, S.C., Taylor, A.I., Quinn, S.J., Evans, D.J.F., Crowder, M.J. | Identification of synthetic diamond grown using chemical vapor deposition (CVD). | Gems & Gemology, Vol. 40, 1, Spring, pp. 2-25. | Technology | Diamond synthesis - review |
DS200412-1297 2003 | Meng, Y., Newville, M., Sutton, S., Rakovan, J., Mao, H-K. | Fe and Ni impurities in synthetic diamond. | American Mineralogist, Vol. 88, 10, Oct. pp. 1555-69. | Technology | Diamond - synthesis |
DS200412-1427 2003 | New Scientist | Harvesting diamonds from CO2. | New Scientist, No. 2405, July 26, p. 17. | Technology | Diamond - synthesis |
DM200412-3105 2003 | Rapaport News | Conflict and synthetic diamonds - major threats to industry. Brief comments on keynote address at Diamond Colloqium in Johannesb | Rapaport News, Nov. 3, 1/8p. | Global | News item - HTHP, CVD |
DM200412-3107 2003 | Rapaport News | Sundance execs speak on HOHT. Only type IIa diamonds can be used to create colorless diamonds. | Rapaport News, Dec. 12, 1/8p. | Technology | News item - Sundance Diamonds |
DM200412-3137 2004 | Rapaport News | Scientist reveals signs of treated and synthetic diamond. | Rapaport News, April 23, 1/4p. | Technology | Diamond synthesis |
DM200412-3143 2003 | Rapaport News | Apollo Diamond to release CVD diamonds in Q4. | Rapaport News, August 11, 1/4p. | Technology | Diamond synthesis Apollo Diamond |
DS200412-1788 2004 | Sever, M. | Next best friend: cultured diamonds. | Geotimes, Vol. 49, 7, pp. 58-59. | Technology | Diamond synthesis |
DS200412-1804 2004 | Shigley, J.E., McClure, S.F., Breeding, C.M., Hsi-tien Shen, A., Muhlmeister, S.M. | Lab grown coloured diamonds from Chatham created gems. Identifying characteristics of yellow, blue, green and pink synthetic dia | Gems & Gemology, Vol. 40, 2, Summer, pp.128-145. | China | Diamond synthesis |
DS200412-1815 2004 | Shumilova, T. | Kinetic postcrystallization of diamond and graphite at atmospheric pressure. | Lithos, ABSTRACTS only, Vol. 73, p. S101. abstract | Technology | Diamond synthesis |
DS200412-1816 2004 | Shuskanova, A.V., Litvin, Yu.A. | Experimental liquid immiscibility in sulfide silicate pyrrhotite garnet system at 7 GPa: implications to origin of diamond and s | Lithos, ABSTRACTS only, Vol. 73, p. S101. abstract | Technology | Diamond synthesis |
DM200412-3314 2004 | The Loupe ( GIA ) | Another look at detection of CVD synthetic diamonds - and some unusual red gemstones. | Gemological Institute of America, Spring, 1p. p. 15. | Technology | News item - synthetic diamonds |
DS200412-2083 2003 | Wang, W., Moses, T., Linares, R.C., Shigley, J.E., Hall, M., Butler, J.E. | Gem quality synthetic diamonds grown by a chemical vapor deposition ( CVD) method. | Gems & Gemology, Vol. 39, Winter,pp. 268-283. | Technology | Synthetic diamond |
DS200512-0219 2003 | Davis, J. | The new diamond age. Armed with inexpensive mass produced gems, two startups are launching an assault on De Beers cartel. | Wired Magazine, Issue 11.09 Sept. 8p. | | Diamond synthesis |
DS200512-0333 2005 | Gems & Gemology | In review - synthetic diamonds.. the best of Gems & Gemology on the subject of synthetic diamonds now available in one comprehensive research volume. | Gems & Gemology, Vol. 41, 1, Spring p. 41 $ 49.95 gia.edu | | Diamond - synthesis |
DS200512-0421 2005 | Hemley, R.J.,Chun Chen, Y., Yan, C-S. | Growing diamond crystals by chemical vapor deposition. | Elements, Vol. 1, 2, March pp. 105-108. | | CVD, HP |
DM200512-1456 2004 | Idex Online | EGL, USA publishes synthetic diamond booklet. | Idex Online, Nov. 14, 1/2p. | | Booklet - guide HPHT, CVD |
DM200512-1624 2005 | Idex Online | Lab says it makes D flawless diamonds, but does it? | Idex Online, Oct. 3, 1p. | Technology | News item - lab-created diamonds, culture |
DM200512-1976 2005 | Rapaport News | CVD breakthrough makes 10 carat diamond in hours. Dr. Richard Hemley Carnegie Institution's Geophysical Laboratory - comments | Rapaport, May 20, 1/8p. | | Diamond synthesis |
DM200512-2201 2005 | Rapaport News | Synthetics pose bold threat says Namdeb CEO. | Rapaport, Oct. 7, 1/4p. | Global | News item - synthetic diamonds |
DS200512-0979 2004 | Shigley, J. E., Breeding, C.M., Hsi-Tien Shen, A. | An updated chart on the characteristics of HPHT grown synthetic diamonds. | Gems & Gemology, Vol. 40, 4, Winter, pp. 312. | | Synthetic diamond identification |
DS200612-0201 2006 | Butler, J.E. | Growth of CVD synthetic diamond. | GIA Gemological Research Conference abstract volume, Held August 26-27, p. 34. 1/2p. | Technology | Diamond synthesis |
DM200612-2018 2006 | Diamonds.net | De Beers' Element Six raises dividend 450%. | Diamonds.net, April 6, 1p. | Europe, Ireland | News item - Element Six |
DM200612-2019 2006 | Diamonds.net | De Beers' Element Six targets $ 1 B in sales by 2010. Synthetic diamond applications. | Diamonds.net, Oct. 11, 3p. | Global | News item - Element Six |
DM200612-2038 2006 | Diamonds.net | Dicaprio could help polish up diamond culture. Ideal marketing tool for 'cultured diamonds'. | Diamonds.net, July 4, 2p. | Global | News item - Gemisis |
DS200612-0421 2006 | Galimov, E., Kudin, A., Skorobogatskii, V., Plotnichenko, V., Bondarev, O., Zarubin, B., Strazdovskii, V., Aronin, A., Fisenko, A., Bykov, I., Barinov, A. | Experimental corrobation of the synthesis of diamond in the cavitation process. | Doklady Physical Chemistry, Vol. 49, 3, pp. 150-153. | Technology | Diamond synthesis |
DS200612-0440 2006 | Geological Society of India Journal | 10 carat synthetic diamond. | Journal of the Geological Society of India, Vol. 68, 1, p. 151. ( 1/4 p.) | India | Diamond synthesis |
DM200612-2351 2006 | Idex Online | Sundance creates world's largest fancy pink enhanced diamond. | Idex Online, May 25, 1/2p. | Technology | News item - Sundance |
DM200612-2355 2006 | Idex Online | The law, ethics and the 'S' word. ( Synthetic) | Idex Online, Oct. 10, 4p. | Global | Synthetic diamonds |
DM200612-2508 2006 | Mineweb | America's Gemisis poses a diamond threat to De Beers. | Mineweb, June 28, 2p. | Africa, South Africa | News item - Gemisis |
DM200612-2509 2006 | Mineweb | America's Gemisis poses a diamond threat to De Beers. | Mineweb, June 28, 2p. | Global | News item - Gemisis |
DS200612-1255 2006 | Scott, K. | The history and impact of synthetic diamond cutters on the oil and gas industry. | Industrial Diamond Review, no. 1, pp. 48-55. Ingenta 1061360134 | Global | Diamond synthetics - markets |
DS200612-1508 2005 | Wang, W., Tallaire, A., Hall, M.S., Moses, T.M., Achard, J., Sussmans, R.S., Gicquel, A. | Experimental CVD synthetic diamonds form LIMPH-CNRD France. | Gems & Gemology, Vol. 41, 3, Fall, pp. 234244. | Technology | Synthetic diamonds |
DS200712-0216 2006 | David, C., Collins, A.T., Martineau, P. | Defects in single crystal CVD synthetic diamond studied by optical spectroscopy with the application of uniaxial stress. | Gems & Gemology, 4th International Symposium abstracts, Fall 2006, p.121-2, abstract only | Technology | CVD diamond |
DS200712-0234 2006 | Deljanin, B., Simic, D., Epeloym, M., Zaitsev, A.M. | Study of fancy color and near colorless HPHT grown synthetic diamonds from advanced optical technology Co. Canada. | Gems & Gemology, 4th International Symposium abstracts, Fall 2006, p.154-5. abstract only | Technology | Synthetic diamonds |
DM200712-1648 2007 | Diamonds.net | Diamond miners VS man-made diamonds. Brian Linares of Apollo Diamond. | Diamonds.net, June 18, 2p. | United States | News item - Apollo Diamond |
DM200712-1649 2007 | Diamonds.net | Time Magazine: Diamonds De Novo. Apollo Diamonds. | Diamonds.net, Feb. 1, 2p. | United States | News item - Apollo Diamonds |
DM200712-1815 2007 | Diamonds.net | Element Six increases turnover, pre-tax profits but finished '06 in the red. Sales of $ 332 million in 2006. | Diamonds.net, Oct. 31, 1p. | Global | News item - Element Six |
DM200712-1848 2007 | Diamonds.net | Gemesis Corporation joins cultured diamond foundation. | Diamonds.net, Jan. 19, 1p. | United States, Florida | News item - Gemesis |
DM200712-1849 2007 | Diamonds.net | Gemesis's growth: pictures how it best. | Diamonds.net, Sept. 7, 2p. | United States, Florida | News item - Gemesis |
DM200712-1850 2007 | Diamonds.net | Gemesis to supply Renaissance Diamond for new jewelry collection. | Diamonds.net, May 29, 1/4p. | United States | News item - Gemesis, Renaissance |
DM200712-1860 2007 | Diamonds.net | IGI opens lab in Kolkata, India. | Diamonds.net, Sept. 7, 1/2p. | India | News item - IGI |
DM200712-1506 2007 | DIB Online | Gemesis plans to expand its cultured diamonds plant. | DIB Online, August 28. 1/2p. | United States, Florida | News item - Gemesis |
DM200712-1507 2007 | DIB Online | Taryn Rose designs jewelery line using Gemesis lab grown diamonds. | DB Online, Sept. 19, 1/4p. | United States, Florida | News item - Gemesis |
DM200712-2135 2007 | Financial Post | Labs dull diamonds lustre. Upstart makers of synthetic gems hope to grab 20% of US $ 74 billion diamond market. Apollo Diamonds. | Financial Post, June 15, p. FP7. | Technology | News item - Apollo |
DM200712-2153 2006 | Gems & Gemology | The great synthetic diamond debate... brief overview of panelist's positions, | Gems & Gemology, 4th International Symposium abstracts, Fall 2006, p.66-67. abstract only | Global | Synthetic diamonds |
DM200712-2167 2007 | Iafrica.com | Was your diamond grown in a lab. Commentary by Gemesis CEO. | Iafraca.com, Feb 26, 2p. | Technology | News item - Gemesis |
DS200712-0640 2007 | Liu, Q.W. | Synthetic diamond: possibily grown at higher temperatures. | Gems & Gemology, Vol. 43, 1, p.53-4. | Technology | Diamond synthesis |
DM200712-2583 2007 | Miningmx | Synthetic diamonds 5% of supply. | Miningmx.com, Feb. 22, 1/8p. | Global | News item - synthetic diamonds |
DS200712-0976 2007 | Shen, A.H., et al. | Serenity coated coloured diamonds: detection and durability. | Gems & Gemology, Vol. 43, 1, pp. 16-34. | Technology | Diamond synthesis - Serenity |
DS200712-1140 2006 | Welbourn, C. | Identification of synthetic diamonds: present status and future developments. | Gems & Gemology, 4th International Symposium abstracts, Fall 2006, p.34-5. abstract only | Global | Synthetic diamonds |
DS200812-0129 2008 | Boser, U. | Diamonds on demand. | Smithsonian, Vol. 39, 3, June pp. 52-59. | Technology | Lab-grown diamonds, Appolo synthesis |
DM200812-1795 2008 | Diamonds.net | GIA: Gems & Gemology winter issue features newest CVD synthetic diamonds. | Diamonds.net, Jan. 21, 1/2p. | Global | News item - Apollo |
DM200812-1796 2008 | Diamonds.net | Fake gems, genuine appeal ( precis of Smithsonian article). | Diamonds.net, June 22, 1p. | Technology | News item - Apollo Diamonds |
DM200812-1930 2008 | Diamonds.net | Element Six makes senior appointment to seek investments. Grunewald. | Diamonds.net, March 4, 1/2p. | Global | News item - Element Six |
DM200812-1961 2008 | Diamonds.net | Gemesis exhibits fancy colour cultured diamond collection in Beverely Hills. | Diamonds.net, Feb. 22, 1/4p. | United States, Florida | News item - Gemesis |
DM200812-1975 2008 | Diamonds.net | No misconception - lab created diamonds are distinguishable. | Diamonds.net, July 17, 1/2p. | Technology | News item - IGI |
DM200812-2187 2008 | Diamonds.net | Sundance Diamonds appoints Pope as Gen. manager. | Diamonds.net, May 22, 1/4p. | United States, Utah | News item - Sundance synthetic |
DM200812-2322 2008 | DIB Online | Element Six hopes to double annual sales to US % 1 billion by 2013. | Diamond Intelligence Briefs, July 8, 1/4p. | Global | News item - Element Six |
DM200812-2442 2008 | DIB Online | Mexican scientists make diamonds from Tequila. | Diamond INtelligence Briefs, Nov. 13, 1/2p. | Technology | Synthetic diamonds |
DS200812-0308 2008 | Eaton-Magana, S. | Hope diamond meets its match. Aurora Butterfly of Peace... coloured diamonds. | The Loupe, Vol. 17, 3, summer, p. 1. | United States | Technology - coloured diamonds |
DM200812-2476 2008 | Gems & Gemology Lab Notes | First CVD synthetic diamond submitted for Dossier grading. | Gems & Gemology, Vol. 44, 1, spring pp. 67-69. | Technology | CVD - graded |
DM200812-2509 2008 | Idex Magazine | GIA examines the newest generation of Apollo CVD synthetic diamonds. | Idex Magazine, July 14, 2p. | Technology | News item - Apollo |
DM200812-2525 2008 | Idex Magazine | Element Six. | Idex Magazine, Nov. 8, 2p. | Global | Synthetic diamond markets |
DM200812-2526 2008 | Idex Magazine | Forever marketing synthetic gem-quality diamonds. | Idex Magazine, Nov. 8, 2p. | Technology | Synthetic diamond markets |
DS200812-0574 2008 | Kitawaki, H., Abduriyim, A., Okano, M. | Identification of melee size synthetic yellow diamonds in jewelry. | Gems & Gemology, Vol. 44, 3, pp. 202-213. | Technology | Synthetics |
DS200812-0617 2008 | Kupriyanov, I.N., Paynamov, Yu.N., Kalinin, A.A., Sokol, A.G., Khokhryakov, A.F., Gusev, V.A. | The effect of HPHT treatment on the spectroscopic features of type IIb synthetic diamonds. | Diamond and Related Materials, Vol. 17, 7-10, pp. 1203-1206. | Technology | Type IIb synthetics |
DS200812-0657 2008 | Li, L., Xu, B., li, M. | Analysis of the carbon source for diamond crystal growth. | Chinese Science Bulletin, Vol. 53, 6, pp. 937-942. | Technology | Diamond synthesis |
DM200812-2624 2007 | London Mining Journal | Will synthetics outsparkle naturals? | London Mining Journal, Dec. 7, pp. 22-25. | Global | Overview - synthetic markets |
DS200812-1064 2008 | Shushkanova, A.V., Litvin, Yu.A. | Diamond formation in sulfide pyrrhotite carbon melts: experiments at 6.0-7.1 GPa and applications to natural conditions. | Geochemistry International, Vol. 46, 1, pp. 37-47. | Technology | Diamond synthesis |
DM200812-2886 2008 | The Israeli Diamond Industry | Who's afraid of synthetic diamonds? | israelidiamonds.co, October 7, 4p. | Global | News item - synthtic diamonds |
DS200812-1239 2007 | Wang, W., Hall, W.S., Soe Moe, K., Tower, J., Moses, T.M. | Latest generation CVD grown synthetic diamonds from Appollo Diamond Inc. | Gems & Gemology, Vol. 43, 4, Winter pp. 294-312. | Technology | Overview of CVD |
DS200812-1278 2008 | Wyndham, C. | Synthetic diamonds Armageddon or cultured bliss? Presented by WWW group Polishedprices.com | Botswana Resource Conference held July 23-24., ppt presentation 10 slides | Global | Overview - synthetic diamonds |
DM200912-1479 2009 | Diamonds.net | Labor relations to hear from workers at Element Six. | Diamonds.net, Jan. 21, 1/2p. | Europe, Ireland | News item - Element Six |
DM200912-1480 2009 | Diamonds.net | Element Six negotiates to save jobs. | Diamonds.net, August 6, 1p. | Europe, Ireland | News item - Element Six |
DM200912-1481 2009 | Diamonds.net | Element Six to save over 240 jobs. | Diamonds.net, August 9, 1p. | Europe, Ireland | News item - Element Six |
DM200912-1734 2008 | Diamonds.net | McEwen to leave Gemesis. | Diamonds.net, Dec. 8, 1/4p. | United States | News item - Gemesis |
DM200912-1855 2009 | Idex Online | Justice in the Antwerp diamond district.... AP Diamonds. | Idex Online, April 30, 4p. | Europe, Belgium | News item - AP Diamonds |
DM200912-1901 2009 | Idex Online | More lay offs at Element Six. | Idex Online, July 22, 1/2p. | Europe, Ireland | News item - Element Six |
DM200912-1938 2009 | Idex Online | CEN workshop revisited: 'not an official standard'. | Idex Online, April 16, 3p. | Global, Europe | News item - synthetic diamond standards |
DS200912-0692 2009 | Shigley, J.E. | Identifying synthetic and treated gem diamonds. | PDAC 2009, 1p. abstract | Technology | Diamonds - treated and synthetic |
DM201012-1414 2010 | Diamonds.net | DMIA confirms De Beers settlement rehearing begins in Feb. | Diamonds.net, Oct. 28, 1/4p. | United States | News item - DMIA |
DM201012-1770 2010 | G & G eBrief | Treated CVD grown pink synthetic diamond submitted as natural. | G & G eBrief, April 5, 1p. | Technology | CVD synthetic |
DM201012-1779 2010 | G & G eBrief | Identifying melee size yellow synthetic diamonds. | G&G eBrief, August 3, 1/4p. | Technology | News item - synthetics |
DS201012-0231 2010 | Gems & Gemology | CVD synthetic diamond over one carat. | Gems & Gemology Lab Notes, Vol. 46, 2, p. 143-144. | Technology | Diamond synthetics |
DS201012-0225 2010 | Gems & Gemology Lab notes | Red CVD synthetic diamond with multiple treatments. | Gems & Gemology, Vol. 46, 1, Spring pp. 52-53. | Technology | Synthetic diamonds |
DM201012-1836 2010 | Idex Online | GIA identifies carat plus CVD synthetic diamond. | Idex Online, May 13, 1p. | Technology | News item - Apollo |
DS201012-0311 2010 | Irifune, T., Isobe, F., Shinmei, T., Sanchira, T., Ohfuji, H., Kurio, A., Sumiya, H. | Synthesis of ultrahard nano-polycrystalline diamond at high pressure and temperature using a large volume multianvil apparatus. | International Mineralogical Association meeting August Budapest, abstract p. 182. | Technology | Diamond synthesis |
DS201012-0355 2010 | Khan, R.U.A., Martineau, P.M., Cann, B.L., Newton, M.E., Dhillon, H.K., Twitchen, D.J. | Color alterations in CVD synthetic diamond with heat and UV exposure: implications for color grading and identification. | Gems & Gemology, Vol. 46, 1, Spring pp. 18-27. | Technology | CVD synthetics |
DS201012-0468 2010 | Makeyev, A.B. | Informative value of the diamonds' minerals - indicators study. | International Mineralogical Association meeting August Budapest, abstract p. 185. | Russia | Diamond - synthesis |
DS201012-0548 2010 | Ohfuji, H., Okimoto, S., Kunimoto, T., Irifune, T. | Influence of graphite crystallinity on the microtexture of polycrystalline diamond obtained by direct conversion. | International Mineralogical Association meeting August Budapest, abstract p. 182. | Technology | Diamond synthesis |
DS201012-0562 2009 | Palyanov, Y.N., Kupriyanov, I.N., Borzdov, Y.M., Sokol, A.G., Khokhryakov, A.F. | Diamond crystallization from a sulfur - carbon system at HPHT conditions. | Crystal Growth & Design, Vol. 9, 6, pp. 2922-2926. | Technology | Diamond synthesis |
DS201012-0833 2010 | Wang, W., Doering, P., Tower, J., Lu, R., Eaton-Magana, S., Johnson, P., Emerson, E., Moses, T.M. | Strongly coloured pink CVD lab grown diamonds. A new generation of CVD lab-grown diamonds from Apollo Diamond Inc. | Gems & Gemology, Vol. 46, 1, Spring pp. 4-17. | Technology | CVD Pink synthetics |
DS201012-0834 2010 | Wang, W., Moses, T. | GIA Lab grades largest ( 4+ carat) HPHT grown synthetic diamond submitted to date. | Gems & Gemology Lab Notes, Nov. 2. 1/4p. | Technology | Diamond synthesis |
DM201112-1730 2011 | Diamonds.net | Element Six Ventures opens office in Silicon Valley. | Diamonds.net, Oct. 10, 1/2p. | United States | News item - Element Six |
DM201112-1951 2011 | Diamonds.net | U.S. grants a process patent to Element Six. ( thick single diamond layer method for making it and gemstones produced from the layer). | Diamonds.net, Feb. 18, 1/4p. | Technology | News item - synthetics |
DM201112-1952 2011 | Diamonds.net | Moses to present updates on synthetics and treatments in Gabarone. | Diamonds.net, Feb. 15, 1/4p. | Technology | News item - synthetics |
DS201112-0356 2011 | Gems & Gemology | Fluorescence contributes to strong pink colour in treated synthetic diamonds. | Gems & Gemology Brief, Vol. 20, 10, 1/2p. | Technology | Synthetic diamonds |
DM201112-2104 2010 | Idex Online | Gemesis goes white, to market directly to consumers. | Idex Online, Nov. 30, 1p. | United States | News item - Gemesis |
DS201112-0485 2011 | Johnson, P. | Pink HPHT synthetic diamonds - a new coloration technique. | GIA International Symposium 2011, Gems & Gemology, Summer poster abstract session p.133-4 | Technology | Diamonds - synthesis |
DM201112-2248 2011 | London Mining Journal | Synthetic diamonds ... manufacturing is being perfected. | London Mining Journal Diamonds supplement, June p. 16 1/4p. | Technology | History - synthetics |
DM201112-2383 2011 | Mining.com | De Beers sets up synthetic diamond VC office in Silicon Valley. | Mining.com, Oct. 10, 2p. | United States | News item - Element Six |
DS201112-0811 2011 | Polyakov, S.N., Denisov, V.N., Kuzmin, N.V., Kuznetsov, M.S., Martyushov, S.Yu., Nosukhin, Terentiev, Blank | Characterization of top quality type IIa synthetic diamonds for new x-ray optics. | Diamond and Related Materials, Vol. 20, no. 5-6m pp. 726-728. | Technology | Diamond - synthesis applications |
DS201112-0934 2011 | Schwander, M., Partes, K. | A review of diamond synthesis by CVD processes. | Diamond and Related Materials, Vol. 20, 9, pp. 1287-1301. | Technology | Diamond synthesis |
DS201112-1115 2011 | Willems, B., Tallaire, A., Barjon, J. | Exploring the origin and nature of luminescent regions in CVD synthetic diamond. | Gems & Gemology, Vol. 47, 3, fall pp. 202-207. | Technology | Synthetic diamond |
DS201201-0842 2011 | G & G Lab notes | Gem quality CVD synthetic diamonds from Gemesis. | Gems & Gemology, Vol. 47, 3, pp. 227-228. | Technology | Gemesis CVD |
DM201205-2756 2012 | Stockwatch | Diamonds & specialty minerals summary April 11, 2012. HW, Scio, Renforth | Stockwatch, April 11, 2p. | Canada, Global | News item - Scio |
DM201206-1445 2012 | Diamonds.net | IGI finds hundreds of undisclosed synthetic diamonds at labs. | Diamonds.net, May 21, 1p. | Global | News item - synthetics |
DM201206-1447 2012 | Diamonds.net | Diamond disclosures… synthetics. | Diamonds.net, May 25, 2p. | Global | News item - synthetics |
DM201206-1454 2012 | Diamonds.net | Scio Diamond completes first run CVD single crystal production. Synthetics | Diamonds.net, May 30, 1.4p. | Technology | News item - Scio |
DM201206-1455 2012 | Diamonds.net | DMIA calls for action to prevent synthetics from entering the market disguised as natural. | Diamonds.net, May 30, 1/4p. | Global | News item - DMIA |
DM201206-1420 2012 | DIB Online | Synthetics specifically 'made to defraud' - Chaim Even-Zohar discussion.. Industry leadership contemplating strong response. | Diamond Intelligence Briefs, Vol. 27, no. 709, May 21, 3p. | Global | News item - synthetics |
DM201206-1421 2012 | DIB Online | The mystery of two Gemesis companies under one hat. | Diamond Intelligence Briefs, Vol. 27, no. 709, May 21, 5p. | Global, United States | News item - History - Gemesis |
DM201206-1464 2012 | Idex Online | Gemesis: it's not us, others sold inappropriately. | Idex Online, May 22, 1p. | Global | News item - Gemesis |
DM201206-1470 2012 | Idex Online | Shaking off the monkey .. Synthetics | Idex Online, May 31, 2p. | Global | News item - synthetics |
DM201206-1502 2012 | Polished prices | Debswana looks at new deposit. DK7 | Polishedprices.com, May 8, 1p. | Africa, Botswana | News item - Element Six |
DM201206-1515 2012 | The Israeli Diamond Industry | Synthetics specifically 'made to defraud' - Antwerp IGI Lab discovers over 600 undisclosed synthetics - Chaim Even-Zohar discussion | israelidiamond.co.il, May 22, 4p. | Global | News item - synthetics |
DM201207-1547 2012 | Diamonds.net | DDC warns of impact from synthetics being sold as natural diamonds. | Diamonds.net, June 6, 1/2p. | Global | News item - synthetics |
DM201207-1571 2012 | Diamonds.net | GIA addresses synthetic diamond concerns. | Diamonds.net, June 28, 1p. | Global | News item - synthetics |
DM201207-1612 2012 | The Israeli Diamond Industry | DMIA to fight non-disclosure of synthetic diamonds. | israelidiamond.co.il, May 31, 1/2p. | Global | News item - DMIA |
DM201209-1847 2012 | Diamonds.net | Scio deploys its Mosaic Diamond growth process. | Diamonds.net, August 23, 1/4p. | Technology | News item - Scio |
DM201209-1865 2012 | Idex Online | Lab diamond maker reaches 1,000 carat milestone, ships to customers. | Idex Online, August 1, 1p. | United States | News item - Scio |
DM201211-2122 2012 | Mining.com | Scio Diamond to raise shipments on record output. | Mining.com, Oct. 2, 1/2p. | Technology | News item - Scio |
DM201211-2152 2012 | Rough-Polished | Scio ramps up production, shipments. | rough-polished.com, Oct. 12, 1/4p. | Technology | News item - Scio |
DM201212-2260 2012 | Diamonds.net | Element Six acquires MegaDiamonds cutting tool business. | Diamonds.net, Dec. 5, 1/2p. | Global | News item - Element Six |
DS201212-0179 2012 | Eaton-Magana, S., D'Haenens-Johansson, U.F.S. | Recent advances in CVD synthetic diamond quality. | Gems & Gemology, Vol. 48, 2, summer pp. 124-127. | Technology | Synthetics |
DS201212-0180 2012 | Eaton-Magana, S., D'Haenens-Johansson, U.F.S. | Recent advances in CVD synthetic diamond quality. | Gems & Gemology, Vol. 48, 2, Summer pp. 124-127. | Technology | Synthetic diamonds |
DS201212-0215 2012 | G & G eBrief | Gemesis CVD grown synthetic diamonds characterized. | Gems & Gemology Lab Notes, 1p. | Technology | Synthetic diamonds |
DS201212-0217 2012 | G & G eBrief | Type Iib CVD synthetic diamond. | G & G Brief, August 1/2p. | Technology | Diamond - synthetics |
DS201212-0223 2012 | G & G eBrief | HPHT grown synthetic diamond - DiamondView | G & G Brief, Vol. 3, 4, Jan. 14, 1/2p. | Technology | Diamond synthesis |
DS201212-0240 2012 | GIA Lab | CVD synthetic diamonds identified in Hong Kong laboratory. | G & G Brief, Vol. 3, 10, July 10, 1/4p. | Technology | Synthetic diamonds |
DS201212-0335 2012 | Iverson, J. | Transparency and synthetic diamonds. | Gems & Gemology, Vol. 48, 2, summer 1p overview | Technology | Synthetics |
DM201212-2324 2012 | Rough-Polished | Mellier appointed chairman of Element Six. | rough-polished.com, Oct. 29, 1/4p. | Technology | News item - Element Six |
DS201212-0662 2012 | Skalwold, E. | Characterization of a synthetic nano-polycrystalline diamond gemstone. | Gems & Gemology, Vol. 48, 3, pp. 188-192. | Technology | Synthetics |
DS201212-0664 2012 | Skalwold, E.A., Renfro, N.,Shigley, J.E., Breeding, C.M. | Characterization of a synthetic nano-polycrustalline diamond gemstone. | Gems & Gemology, Vol. 48, 3, pp. 188-192. | Technology | Synthetics |
DS201212-0761 2012 | Wang, W., D'Haenens-Johansson, U.F.S., Johnson, P., Moe, K.S., Emerson, E., Newton, M., Moses, T.M. | CVD synthetic diamonds from Gemesis Corp. | Gems & Gemology, Vol. 48, 2, summer pp. 80-97. | Technology | Gemesis |
DS201212-0762 2012 | Wang, W., D'Haenens-Johansson, U.F.S., Johnson, P., Soe Moe, K., Emerson, E., Newton, M., Moses, T.M. | CVD synthetic diamodns from Gemesis Corp. | Gems & Gemology, Vol. 48, 2, Summer pp. 80-97. | Technology | Gemesis |
DS201212-0780 2011 | Willems, B., Tallaire, A., Barjon, J. | Exploring the origin and nature of luminescent regions in CVD synthetic diamond. | Gems & Gemology, Vol. 47, 3, Fall, pp. | Technology | Synthetics |
DS201212-0832 2011 | Zhonghua, S., Taijin, L., Meidong, S., Jun, S., Jingjing, S. | High quality synthetic yellow orange diamond emerges in China. | The Australian Gemmologist, Vol. 24, 7, July-Sept pp. | Technology | Synthetics |
DM201301-1052 2012 | Diamonds.net | Element Six acquires MegaDiamond' s cutting tool business. | Diamonds.net, Dec. 5, 1/4p. | Technology | News item - Element Six |
DM201301-1061 2012 | Idex Online | Gemesis CEO steps down: Company says realigned for growth. | Idex Online, Dec. 20, 1/2p. | United States | News item - Gemesis |
DM201301-1086 2012 | Rough-Polished | Supply of synthetic diamonds growing albeit blighted by cheating manufacturers. | rough-polished.com, Dec. 13, 1p. | Technology | News item - synthetics |
DM201302-1156 2013 | DIB Online | Apparent obstruction of justice in Gemesis synthetics fraud investigation - the evidence disappeared. | DIB, No. 742, Jan. 17, 3p. | United States, Europe, Belgium | News item - Gemesis |
DM201302-1202 2013 | Mining.com | Division of De Beers working on diamond atoms: report. | Mining.com, Jan 16, 1p. | Technology | News item - Element Six |
DM201302-1241 2013 | Rough-Polished | De Beers diamond execs shone at DMIA meeting. | rough-polished.com, Jan. 25, 1/4p. | United States | News item - DMIA |
DM201303-1284 2013 | Diamonds.net | AG& J identifies synthetics melee mixed with natural diamonds. | Diamonds.net, Jan. 29, 1p. | Technology | News item - synthetics |
DM201303-1291 2013 | Diamonds.net | Scio Diamond appoints McMahon as CEO. | Diamonds.net, Feb. 1, 1/4p. | Technology | News item - Scio |
DM201303-3191 2013 | Florida Business Observer | Company navigates rough road for sales. Gemesis | review.net, Jan. 31, 1p. | United States | News item - Gemesis |
DM201303-1396 2013 | The Israeil Diamond Industry | Element Six boosts synthetic diamond production. | israelidiamond.co.il, Feb. 5, 1/2p. | United States | News item - Element Six |
DM201304-1433 2013 | Diamonds.net | Hollywood rolls out the red carpet for Gemesis diamonds. | Diamonds.net, March 5, 1/2p. | United States | News item - Gemesis |
DM201305-1604 2013 | Diamonds.net | Gemesis presents world largest, whitest lab-created diamond. 1.29 carat. | Diamonds.net, April 23, 1/2p. | United States | News item - Gemesis |
DM201305-1607 2013 | Frost & Sullivan | Shaping future of diamond industry. Technology impact assessment. | Frost & Sullivan, April 24, 28p. Pdf | Global | News item - synthetics |
DM201305-1623 2013 | Jeweller Magazine | Lab created diamond debate heats up. | Jeweller Magazine, April, 1p. | Technology | News item - Gemesis |
DM201305-1643 2013 | Rough-Polished | Indian industry leaders: chances of large scale entry of synthetics into market low. | rough-polished.com, March 29, 1/2p. | India | News item - synthetics |
DM201305-1710 2013 | The Israeli Diamond Industry | Indians, Even-Zohar at odds over synthetic diamonds. | israelidiamond.co.il, March 28, 1/4p. | India | News item - synthetics |
DM201306-1756 2013 | Diamonds.net | DMIA reiterates commitment to U.S. diamond and jewelery business and global community. | Diamonds.net, April 29, 1p. | Global | News item - DMIA |
DM201306-1867 2013 | The Israeli Diamond Industry | Diamond group responds to leadership critique. DMIA | israelidiamond.co.il, April 29, 1p. | United States | News item - DMIA |
DM201307-1913 2013 | Diamonds.net | Element Six acquires assets, property of Group4 labs. | Diamonds.net, May 29, 1p. | Global | News item - Element Six |
DM201307-1906 2013 | DIB Online | Let's stop kidding ourselves: Synthetic diamonds have invisibly integrated into our polished supplies: are we heading for industry suicide? | Diamond Intelligence Briefs ( courtesy of Chaim), Vol. 28, no. 763, June 13, 8013-8018. | Technology | News item - synthetics |
DM201308-2158 2013 | Rough-Polished | Diamond firm Element Six opens 20 mln lbs Oxfordshire building. | rough-polished.com, July 5, 1/4p. | Europe, United Kingdom | News item - Element Six |
DM201309-2237 2013 | Diamonds.net | M. Geller, Gemesis partner on distribution deal. | Diamonds.net, August 2, 1/4p. | Global | News item - Gemesis |
DM201309-2250 2013 | Idex Online | Synthetic worries - are they justified? | Idex Online, August 15, 1p. | Global | News item - synthetics, markets |
DM201310-2395 2013 | Rough-Polished | EGL Asia starts issuing identification reports for lab grown diamonds. | rough-polished.com, August 22, 1/4p. | Technology | News item - synthetics |
DM201310-2444 2013 | Rough-Polished | Synthetic worries - are they justified? | rough-polished.com, Sept. 16, 1/4p. | Global | News item - synthetics |
DM201311-2514 2013 | Diamonds.net | IGI spotlights synthetic identification, batch testing services | Diamonds.net, Oct. 23, 1/4p. | Global | News item - IGI |
DM201311-2516 2013 | Diamonds.net | Dealing with synthetics. | Diamonds.net, Oct. 25, 1/4p. | Global | News item - synthetics |
DM201311-2519 2013 | Idex Memo | Every week undisclosed synthetics are detected, and consequences are nearing. | Idex Online, Oct. 24, 2p. | Global | News item - synthetics |
DM201311-2525 2013 | Idex Online | IGI stresses need for trusted synthetic identification services. | Idex Online, Oct. 24, 1/4p. | Global | News item - synthetics |
DM201311-2613 2013 | Rough-Polished | Russian physicists are struggling with fake diamonds. Lebedev Lab. | rough-polished.com, Oct. 21, 1/4p. | Russia | News item - synthetics |
DS201312-0209 2013 | Diamond Intelligence Briefs | A global synthetic plague: 'peppering the parcels'. | Diamond Intelligence Briefs, Vol. 28, no. 779, Oct. 3, 2p. | Global | Synthetics |
DS201312-0210 2013 | Diamond Intelligence Briefs | The synthetic plague is becoming an epidemic. Another De Beers sightholder caught in the act. | Diamond Intelligence Briefs, Vol. 28, no. 781, 3p. | Global | Synthetics |
DM201312-2693 2013 | Diamonds.net | Signet acquires diamond polishing factory in Botswana. | Diamonds.net, Nov. 13, 1/4p. | Africa, Botswana | News item - Signet |
DS201312-0237 2013 | E-Briefs | CVD synthetic diamond with aggregated nitrogen impurities. | G & G Brief, 1/2p. | Technology | Synthetic diamonds |
DS201312-0264 2012 | Feral, K. | Detecting HPHT synthetic diamond using a handheld magnet. | Gems & Gemology, Vol. 48, 4, Winter pp. 262-272. | Technology | Synthetic diamonds |
DS201312-0268 2013 | Filonenko, P.V., Zibrov, P.I., Petrovsky, A.V., Sukharev, E.A. | Features of the formation of cubic BCN phase in comparison with natural and synthetic polycrystaline diamonds. | European Journal of Mineralogy, Vol. 25, 3, pp. 373-383. | Technology | Diamond synthetics |
DM201312-2704 2013 | Idex Memo | Setting the stage for lab-made diamonds' legitimate rise. | Idex Online, Oct. 31, 1p. | Global | News item - synthetics |
DM201312-2709 2013 | Idex Online | Gemesis, a major maker of gem-quality lab grown diamonds produces 1.78 Type 11a. | Idex Online, Nov. 18, 1/2p. | Technology | News item - Gemesis |
DS201312-0539 2013 | Liang, Q., Meng, Y., Yan, C., Krasnicki, S., Lai, J., Hemawan, K., Shu,H., Popov, D., Yu,T., Yang, W., Mao, H., Hemley, R. | Developments in synthesis, characterization, and application of large high-quality CVD single crystal diamond. | Journal of Superhard Materials, Vol. 35, 4, pp. 195-213. | Technology | Diamond synthetics |
DS201312-0632 2013 | Napoletani, D., Panza, M., Struppa, D. | Artificial diamonds are still diamonds. | Foundations of Science, Vol. 18, 3, pp. 591-594. | Technology | Synthetics |
DM201312-2730 2013 | Rough-Polished | WFDB is concerned about undisclosed synthetic diamonds. | rough-polished.com, Oct. 30, 1/4p. | Global | News item - synthetics |
DM201312-2750 2013 | Rough-Polished | Martin Rapaport to address synthetic diamond crisis. | rough-polished.com, Nov. 1, 1/4p. | Global | News item - synthetics |
DM201312-2754 2013 | Rough-Polished | Synthetics create chaos in Indian diamond market. | rough-polished.com, Nov. 6, 1/4p. | India | News item - synthetics |
DM201312-2773 2013 | Rough-Polished | Kazakhstan will start producing diamonds 13 Ya "Yava" in Atyrau region. | rough-polished.com, Nov. 12, 1/4p. | Russia, Kazakhstan | News item - synthetics |
DM201312-2782 2013 | Rough-Polished | DMIA urged industry players to meet on the problem of synthetic diamonds. | rough-polished.com, Nov. 15, 1/4p. | Technology | News item - synthetics |
DM201312-2791 2013 | Rough-Polished | Everything that sparkles is not a natural diamond. | rough-polished.com, Nov. 19, 1/4p. | Technology | News item - synthetics |
DM201312-2795 2013 | Rough-Polished | GIA makes synthetic diamond detection machines available to WFDB bourses. | rough-polished.com, Nov. 22, 1/4p. | Global | News item - synthetics |
DS201312-0954 2012 | Wang, W., D'Haenens-Johansson, U.F.S., Johnson, P., Soe Moe, K., Emerson, E., Newton, M.E., Moses, T.M. | CVD synthetic diamonds from Gemesis Corp. | Gems & Gemology, Vol. 48, , summer pp. 80-97. | Technology | Gemesis |
DM201401-1118 2013 | Business Mining | De Beers takes the shine off synthetic diamonds. Not even call them diamonds | bdlive.co.za, Dec. 3, 1p. | Technology | News item - synthetics |
DM201401-1264 2013 | Diamonds.net | Martin Rapaport addresses synthetic diamonds. 4 D's differentiation, detection, disclosure and documentation | Diamonds.net, Dec. 4, 3p. | Global | News item - synthetics |
DM201401-1611 2013 | Idex Online | India opens synthetic diamond detection facility at BDB ( Bharat Diamond Bourse) | Idex online, Dec. 8, 1/2p. | India | News item - synthetics |
DM201401-1831 2013 | Rough-Polished | De Beers launches war of semantics on synthetic diamonds. | rough-polished.com, Dec. 4, 1/4p. | Technology | News item - synthetics |
DM201401-1842 2013 | Rough-Polished | The DDRC inaugurated at Bharat diamond bourse…. Diamond Detection and Resource Centre) | rough-polished.com, Dec. 9, 1/4p. | India | News item - synthetics |
DM201402-1284 2013 | Diamonds.net | GJEPC investgators decend upon Surat to identify synthetic sources. | Diamonds.net, Dec. 31, 1/4p. | India | News item - synthetics |
DM201402-1289 2014 | Diamonds.net | India to code natural, artificial diamonds differently, | Diamonds.net, Jan. 13, 1/4p. | Global | News item - synthetics |
DM201403-1989 2014 | Rough-Polished | Synthetics: is it a threat or the future for the diamond industry? Inreal | rough-polished.com, Feb. 24, 1p. | Global | News item - synthetics |
DM201404-1547 2014 | Frost & Sullivan | Crown diamonds contributing steadily to the gems & jewellery industry, finds Frost & Sullivan. | industrialautomation.frost.com, March, 28p. Available | Global | News item - synthetics |
DM201405-1799 2014 | New York Times | When diamonds are dirt cheap, will they still dazzle? Technology allows perfect replicas of once rare and expensive things. | New York Times, April 20, 2p. | Technology | News item - synthetics |
DM201406-2106 2014 | Rough-Polished | CIBJO conference on synthetic diamonds sparks vigorous debate. | rough-polished.com, May 21, 1/4p. | Global | News item - synthetics |
DM201407-1548 2014 | Frost & Sullivan | Grown diamonds contributing steadily to the Gems & Jewellery industry. The diamond growing greenhouses | Frost & Sullivan, May 29, 2p. Http://bit.ly/1mGnjd4 | Technology | News item - synthetics |
DM201407-2157 2014 | Rough-Polished | Grown diamonds gaining popularity in the jewellery industry - Frost & Sullivan. | rough-polished.com, June 20, 1/4p. | Global | News item - synthetics |
DM201407-2496 2014 | The Israeli Diamond Industry | Stronger than diamond: a diamond within a diamond. 'onions' of carbon created at Yanshan University. | israelidiamond.il.co, June 16, 1/4p. | Technology | News item - synthetics |
DM201408-1675 2014 | India Business | Import duty to increase to ease price differential for man-made diamonds. | India Business, July 1, 1/4p. | India | News item - synthetics |
DM201408-2175 2014 | Rough-Polished | Ernest Blom: WFDB " we do not see synthetic stones as a threat". | rough-polished.com, June 23, 1p. | Technology | News item - synthetics |
DM201409-1197 2014 | Creamers Mining Weekly | Synthetics pose a conundrum for world diamond industry. | Creamers Mining Weekly, July 31, 2p. | Global | News item - synthetics |
DM201409-2238 2014 | Rough-Polished | Pure Grown Diamonds creates a 3 carat grown diamond, the world's largest. | rough-polished.com, Aug. 8, 1/4p. | Technology | News item - Pure Grown |
DM201410-1597 2014 | Idex Memo | Undisclosed synthetic diamonds 'shift' to finished set jewelry. | Idex Online, Sept. 18, 5p. | Global | News item - synthetics |
DM201410-2282 2014 | Rough-Polished | Synthetic stones and Winsome Group in the news again. | rough-polished.com, Sept. 3, 1/4p. | India | News item - synthetics |
DM201410-2297 2014 | Rough-Polished | Diamond Services received the JNA award for innovation in diamonds detection | rough-polished.com, Sept. 19, 1/4p. | Asia, China | News item - Diamond Services |
DM201410-2528 2014 | The Israeli Diamond Industry | Synthetic diamonds - another way of thinking. ( Contaminated packages) | israelidiamond.co.il, Sept. 22, 6p. | Global | News item - synthetics |
DM201411-1487 2014 | Diamonds.net | IIa Technologies receives ISO certification. | Diamonds.net, Sept. 29, 1/4p. | Asia, Singapore | News item - synthetics |
DM201411-1500 2014 | Diamonds.net | Pure Grown Diamonds debuts 'Pure Champagne' collection. Website | Diamonds.net, Oct. 21, 1/4p. | Technology | News item - Pure Grown Diamonds |
DM201411-1248 2014 | DIB Online | Undisclosed synthetic diamonds 'shift' to finished set jewlery. | Diamond Inteligence Briefs ( courtesy of Chaim), Vol. 29, 828, pp. 8820-8823. | Technology | News item - Synthetics |
DM201411-1665 2014 | Idex Online | Pure Grown diamonds launching pink diamonds. | Idex online, Oct. 22, 1/4p. | Technology | News item - Pure Grown Diamonds |
DS201412-0012 2014 | Angus, J.C. | Diamond synthesis by chemical vapor deposition: the early years. | Diamond and Related Materials, Vol. 49, pp. 77-86. | Technology | CVD |
DS201412-0185 2014 | D'Haenens-Johansson, U. | Near colorless CVD and HPHT synthetic gem diamonds - quality advances and identification methods. | ima2014.co.za, Abstract | Technology | Synthetics |
DS201412-0186 2014 | D'Haenens-Johansson, U.F.S., Soe Moe, K., Johnson, P., Yan Wong, S., Lu, R., Wang, W. | Near-colorless HPHT synthetic diamonds from AOTC group. | Gems & Gemology, Vol. 50, 1, Spring, pp. 30-45. | Technology | Synthetic diamonds |
DM201412-1503 2014 | Diamonds.net | Russia considers law on synthetics. | Diamonds.net, Oct. 23, 1/4p. | Russia | News item - synthetics |
DM201412-1519 2014 | Diamonds.net | Synthetics, liquidity are the biggest threats to the diamond industry. H. Goldie and Co. | Diamonds.net, Nov. 2, 1/4p. | Global | News item - synthetics |
DM201412-1246 2014 | DIB Online | The governance of Pure Grown diamonds… Phronesis strategies: the declared owner of the website. | Diamond Intelligence Brief ( courtesy of Chaim), Vol. 28, no. 833, pp. 8873-4. | Technology | News item - Pure Grown |
DS201412-0275 2014 | Gaubas, E., Ceponis, T., Jasiunas, A., Kalendra, V., Pavlov, J., Kazuchits, N., Naumchik, E., Rusetsky, M. | Lateral scan profiles of the recombination parameters correlated with distribution of grown-in impurities in HPHT diamond. | Diamond and Related Materials, Vol. 47, pp. 15-26. | Technology | Synthetics |
DS201412-0383 2014 | Huang, Q., Yu, D., Xu, B., Hu, W., Ma, Y., Wang, Y., Zhao, Z., Wen, B., He, J., Liu, Z., Tian, Y. | Nanotwinned diamond with unprecedented hardness and stability. | Nature, Vol. 510, June 12, pp. 250-253. | Technology | Diamond synthetic |
DM201412-1603 2014 | Idex Memo | 11a Technologies: the murky path to "unlocking nature". | Idex Online, Oct. 31, 2p. | Global | News item - synthetics |
DM201412-1679 2014 | JCK Online | Running the numbers: how many lab-grown diamonds are there? Jewellery Export Promotion Council provided an in-depth study. | JCKonline.com, Nov. 5, 2p. | Global | News item - synthetics |
DS201412-0613 2014 | Narvekar, P. | Lab-grown diamonds: a reality check. | Solitaire International - the India Gem and Jewellery Magazine, Feb. pp. 55-59. | Technology | Synthetic diamonds |
DS201412-0807 2014 | Shigley, J.E. | Identification of treated and synthetic diamonds. | 6 Simposio Brasileiro de Geologia do Diamante, Aug. 3-7, 1p. Abstract | Technology | Synthetics |
DS201412-0963 2014 | Wang, W. | Carbon isotope analysis of CVD synthetic gem diamonds. | ima2014.co.za, Abstract | Technology | Synthetics |
DS201412-0965 2014 | Wang, Wuyi, D'Haenens-Johansson, U., Smit, K., Breeding, C.M., Stern, R. | Carbon isotope analysis of CVD synthetic gem diamonds. | Geological Society of America Conference Vancouver Oct. 19-22, 1p. Abstract | Technology | Synthetics |
DM201501-0458 2014 | Bates, R. | Believe it: the lab-grown diamond sector is out promoting the natural diamonds. | jckonline.com, Dec. 12, 1p. | Technology | News item - Pure Grown |
DM201502-1022 2014 | Rough-Polished | Scio Diamond Technology gets $ 2.5 million growth funding. | rough-polished.com, Dec. 24, 1/4p. | Technology | News item - Scio |
DM201502-1046 2015 | Rough-Polished | Analytics: Synthetic diamonds: response adequate to challenge. | rough-polished.com, Jan. 14, 1p. | Technology | News item - synthetics |
DM201503-0807 2015 | Idex Memo | Synthetic diamond producer creates trade representative body prohibits the use of the 'S'-word. | Idexonline.com, Feb. 12, 8p. | Technology | News item - synthetics |
DM201503-0905 2015 | Mining Review | The lab grown diamond threat - a reality in 10-15 years? | Mining Review.com, Feb. 20, 2p. | Technology | News item - synthetics |
DM201503-1073 2015 | Rough-Polished | The biggest polished synthetic diamond was created in Russia 10.31 IIa type. | rough-polished.com, Feb 2, 1/4p. | Technology | News item - synthetics |
DM201504-0610 2015 | Diamonds.net | GIA & De Beers to speak on synthetic diamonds March 22. Panel discussion at GIA | Diamonds.net, Mar.3, 1/4p. | United States | News item - synthetics |
DM201504-0809 2015 | Idex Memo | Undisclosed lab-grown diamonds strike again. Surat | Idex Online, Feb. 26, 1p. | India | News item - synthetics |
DM201504-1153 2015 | Rough-Polished | Iia Technologies opens diamond green house in Singapore. | rough-polished.com, Mar. 23, 1/4p. | Singapore | News item - synthetics |
DM201506-0660 2015 | Diamonds.net | Scio Diamond to double production levels. | Diamonds.net, Apr. 27, 1/4p. | Technology | News item - Scio |
DM201507-1201 2015 | Rough-Polished | What it will take for the synthetic diamond industry to be ( un) successful. | rough-polished.com, May 27, 1/4p. | Technology | News item - synthetics |
DM201507-1213 2015 | Rough-Polished | Scio Diamond teams with Helzberg to test demand for lab-grown diamonds. | rough-polished.com, June 4, 1/4p. | Technology | News item - Scio Diamond |
DM201507-1235 2015 | Rough-Polished | It's time to regulate - and rename - lab grown diamonds. | rough-polished.com, June 23, 1/4p. | Technology | News item - synthetics |
DM201508-0713 2015 | Diamonds.net | Scio revenue halves, loss narrows to $ 4 million. | Diamonds.net, July 6, 1/4p. | Technology | News item - Scio |
DM201508-0724 2015 | Diamonds.net | New synthetic detector to be shown at HK September show: Quick Take | Diamonds.net, July 22, 1/4p. | Technology | News item - Diamond Services |
DM201508-1260 2015 | Rough-Polished | The three tipping points of Man-made diamonds. | rough-polished.com, July 8, 1/4p. | Technology | News item - synthetics |
DM201509-0464 2015 | Bloomberg | Want to make a diamond in just 10 weeks? Use a microwave. | bloomberg.com, Aug. 27, 2p. | Technology | News item - synthetics |
DS201509-0398 2015 | Hainschwang, T., Notari, F. | The first undisclosed colourless CVD synthetic diamond discovered in a parcel of natural melee sized diamonds. | The Journal of Gemmology, Vol. 334, 6, pp. 518-522. | Technology | Synthetics |
| Abstract: During the March 2015 Diamond Show in Basel, Switzerland, a parcel of 6,000 melee-sized colourless diamonds was analysed using the GGTL Diamond Fluorescence Imaging (DFI) Laser+ fluorescence imaging and spectroscopy system. From the entire parcel, one sample stood out clearly with unusual fluorescence colours and distribution, combined with a photoluminescence spectrum that clearly indicated it was a synthetic diamond grown by chemical vapour deposition (CVD). |
DM201509-0796 2015 | Idex Magazine | Danger of product substitution… | Idex Magazine, Aug. pp. 46-53. | Technology | News item - Lab grown |
DM201509-0797 2015 | Idex Magazine | Lab-grown diamonds increase bargaining power. | Idex Magazine, Aug. pp. 54-66. | Technology | News item - synthetics |
DS201509-0417 2015 | Palyanov, Y.N., Borzdov, Y.M., Kupriyanov, I.N., Bataleva, Y.V., Khohkhryakov, A.F. | Diamond crystallization from tin-carbon system at HPHT conditions. | Diamond and Related Materials, Vol. 58, pp. 40-45. | Technology | Diamond synthetics |
| Abstract: Diamond crystallization from the tin–carbon system has been studied at 7 GPa and temperatures ranging from 1600 to 1900 °C with reaction times from 1 to 20 h. Both diamond growth on the seed crystals and diamond spontaneous nucleation were established, providing evidence for the catalytic ability of tin. A distinctive feature of the Sn–C system is the existence of a significant induction period preceding diamond spontaneous nucleation. Temperature and kinetics are found to be the main factors governing diamond crystallization process. The minimum parameters of diamond spontaneous nucleation are determined to be 7 GPa, 1700 °C and 20 h. The stable form of diamond growth is octahedron and it does not depend on temperature. Synthesized diamonds contain high concentrations of nitrogen impurities up to about 1600 ppm. |
DM201509-1311 2015 | Rough-Polished | Zim establishes diamond cleaning facility. | rough-polished.com, Aug. 12, 1/4p. | Africa, Zimbabwe | News item - laboratory |
DS201510-1774 2015 | Johnson, P., Moe, K.S., D'Haenens-Johansson, U., Rzhevskii, A. | Discovery and distrbution of the [SI-V] defect in HPHT-grown gem quality diamonds. | GSA Annual Meeting, Paper 300-12, 1p. Abstract only Booth | Technology | Synthetic diamonds |
| Abstract: Defect of [Si-V]- is common in CVD synthetic diamonds, and its occurrence was also reported in some rare natural diamonds (Breeding and Wang, 2008). It is an important feature employed for gem diamond identification, and also has great potential for applications in industry. However little is known about how the silicon impurity gets into diamond lattice either in synthetic or natural diamonds. In this study, we discovered the occurrence of [Si-V]- in HPHT synthetic diamonds and the correlation between its precipitation and diamond growth sectors was successfully determined.
Total 20 samples, HPHT grown diamond wafers from NDT (New Diamond Technology) were studied in addition to one type IIb HPHT synthetic diamond submitted to GIA Laboratory for grading. Distributions of defects in these samples were carefully mapped using infrared microscopy at room temperature and an imaging Raman microscope at liquid nitrogen temperature.
Defect of [Si-V]- has doublet emissions at 736.6/736.9 nm (Clark et al., 1995), and can be effectively excited using 633 nm laser. Analyses were conducted at Liquid Nitrogen temperature as the detection of the Si related emissions peak is temperature dependent (Feng and Schwartz 1993). Additionally, the solvent catalysts used in the HPHT methods to grow synthetic diamond either intentionally or unintentionally contain nickel in varying quantities. Nickel impurity creates optical centers which emit a doublet peak at 882.6/884.3nm, and can be easily excited using 780 nm laser.
The [SiV]- is clearly observed in only certain growth sectors of the synthetic crystal and the distribution is not homogeneous. By comparing the two acquired maps one acquired at 633nm excitation showing the [Si-V]- distribution and one acquired with 780nm excitation showing the nickel defect distribution, it was found that the [Si-V]- is confined to the same growth sector as Ni related defect with higher concentrations/intensity at the edges of these sectors. Since it is well known that the Ni defect is confined exclusively to the octahedral growth sectors {111} of diamond (Lawson et al., 1993), this study for the first time confirmed that [Si-V]- is confined to the {111} octahedral growth sectors.
This new discovery leads to discussion as to the incorporation of silicon in diamond and the relationship to other impurities. |
DM201510-2056 2015 | London Mining Journal | Synthetics' impact not clear-cut. | London Mining Journal, Sept. 14, 1/2p. | Global | News item - synthetics |
DM201510-2081 2015 | Rough-Polished | Dharmanand an Research Centre introduces D-Secure for synthetics identification. | rough-polished.com, Sept. 10, 1/4p. | Technology | News item - Synthetics |
DM201510-2084 2015 | Rough-Polished | Scio raises $ 1.6 million to fund synthetic diamond development. | rough-polished.com, Sept. 11, 1/4p. | Technology | News item - Scio |
DS201511-1831 2015 | Deljanin, B., Alessandri, M., Peretti, A., Astrom, M. | NDT breaking the 10 carat barrier: world record faceted and gem-quality synthetic diamonds. | Contributions to Gemology, Vol. 15, pp. 1-7. | Technology | Synthetics |
| Abstract: The first small manufactured industrial diamonds were produced in 1953 by the Swedish company ASEA but their accomplishment went unannounced. In 1970, General Electric (GE) produced synthetic diamond crystals using the HPHT method with a belt type of press and created a 0.78ct polished RBC colorless diamond. In the 1980’s and 1990’s Russians used their own technology (“BARS” and “TOROID” high pressure apparatus (HPA) with high pressure presses of up to 25 MN load) to grow industrial and crystals up to 2.00ct in polished size, mostly orange to yellow in colour. In the last 15 years, companies including Lucent, Chatham, AOTC, Gemesis (now IIa Technologies) and many other producers in China, Germany, India, Russia, Ukraine, USA and Taiwan have improved the technology yet again and used their expertise to successfully grow diamond crystals that cut to 1.00ct up to 2.00ct in size. This “next generation” of diamonds exhibited high clarities (VS and VVS) and colours (D-H), as well as new blue and pink colours (after irradiation). Other companies (ref. 2-3) including Scio Diamonds, Washington Diamonds, Taidiam, PDC diamonds and Pure Grown Diamonds (selling arm of IIa technologies) are also using a very different technology/process of Chemical Vapour Deposition (CVD) to produce laboratory-grown diamonds up to 3.00 ct in size (table 1). |
DM201511-2125 2015 | Diamonds.net | Lab grown diamonds set to fill deficit as mined output declines. | Diamonds.net, Sept. 29, 1/4p. | Global | News item - synthetics |
DM201511-2133 2015 | Diamonds.net | Synthetic diamonds: legitimize, don't ostracize. | Diamonds.net, Oct. 15, 2p. | Technology | News item - synthetics |
DS201511-1840 2015 | Harada, Y., Hishinuma, R., Terashima, C., Uetsuka, H., Nakata, K., Kondo, T., Yuasa, M., Fujishima, A. | Rapid growth of diamond and its morphology by in-liquid plasma CVD. | Diamond and Related Materials, in press available, 16p. | Technology | Synthetics |
| Abstract: Diamond synthesis and its morphology by in-liquid plasma chemical vapor deposition (CVD) method are investigated in this study. Diamond films were grown on Si substrates from mixed alcohol solution. Very high growth rate of 170 ?m/h was achieved by this method. Microcrystalline and nanocrystalline diamond films were formed in different conditions. In the case of microcrystalline film, the shapes of diamond grains depend on the location in the film. All morphological differences in this study can be explained by the same mechanism of conventional gas phase CVD method. It means diamond morphology by in-liquid plasma CVD method can be controlled by process parameters as well as gas phase CVD method. |
DM201511-2141 2015 | Idex Memo | Is banning lab-grown diamonds really a victory? | Idex Online, Oct. 15, 1p. | Technology | News item - synthetics |
DM201511-2144 2015 | Idex Online | Alrosa developing lab-grown diamond screening technology. | Idex Online, Oct. 15, 1/2p. | Technology | News item - synthetics |
DS201511-1854 2015 | Kitawaki, H., Hisanaga, M., Yamamoto, M. | Type 1b yellow to brownish yellow CVD synthetic diamonds seen at CGL. | Journal of Gemmology, Vol. 34, 7, pp. 594-605. | Technology | Synthetics |
| Abstract: In mid-2012, one of the international diamond grading laboratories in Antwerp reported undisclosed CVD synthetic diamonds, causing a stir in the diamond industry (Even-Zohar, 2012). Since then, reports of undisclosed CVD synthetics have also emerged from gem testing laboratories in India and China (D’ Haenens-Johanson et al., 2013; Song et al., 2014). Central Gem Laboratory (CGL) also reported on undisclosed over 1 ct size CVD synthetic diamonds (Kitawaki et al., 2013). Gem quality CVD products have been improved in their size and quality year after year, and a variety of colours have appeared. Most of the CVD synthetic diamonds reported previously are type II, however, recently some yellow CVD synthetic diamonds containing isolated substitutional nitrogen have been supplied to the gem market (Moe et al., 2014; Hainschwang, 2014). This report describes the gemmological features of fifteen yellow to brownish yellow type Ib CVD synthetic diamonds submitted to CGL without disclosure. |
DS201511-1872 2015 | Roskin, G.A. | Synthetic gem quality diamonds: the product, the perception and the retailer. | GemGuide, Vol. 34, 4, pp. 8-10. | Technology | Synthetics |
DM201511-2166 2015 | Rough-Polished | India's BDB ( Bharat Diamond Bourse) in Mumbai has banned the trade in synthetic diamonds effective Otober 1. | rough-polished.com, Oct. 5, 1/4p. | India | News item - synthetics |
DM201511-2181 2015 | Rough-Polished | Synthetic stones will not be considered precious stones in Russia - Moiseev. | rough-polished.com, Oct. 15, 1/4p. | Russia | News item - synthetics |
DM201511-2199 2015 | Rough-Polished | Laboratory grown diamonds are now a fact of life for the industry. T. Moses ( GIA) | rough-polished.com, Oct. 23, 1/4p. | Technology | News item - synthetics |
DS201511-1886 2015 | Tarum, A., Lee, S.J., Yap, C.M., Finkelstein, K.D., Misra, D.S. | Impact of impurities and crystal defects on the performance of CVD diamond detectors. | Diamond and Related Materials, in press available, 6p. | Technology | Synthetics - Radiation detectors |
| Abstract: Radiation detectors based on diamond are highly favored for particle physics research due to the superior radiation hardness. In this work, we investigate the influence of impurities and crystalline imperfections on the charge collection efficiency (CCE) of single crystal diamond. Seventeen (17) ultra-low fluorescent diamond samples grown by microwave plasma chemical vapor deposition method from IIa Technologies PTE LTD are pre-selected for this study. The measured CCE of all samples using 241Am (?-particles) as ionizing source are analyzed together with the concentration of trace impurities and crystalline imperfection in the crystal. The amounts of impurities are quantified from integrated fluorescence intensity arising from the nitrogen vacancies (NV) created during different CVD growth process conditions. The crystal imperfections are assessed by X-ray rocking curves from X-ray topography images obtained at the Cornell High Energy Synchrotron Source. The CCE decays rapidly as the intensity of NV (INV), phonon sideband approaches that of diamond 2nd order Raman peak which follows the relation: View the MathML sourceCCEINV=100/1+INV1.052. The energy resolution, ?E/E (ratio of the energy spectrum width to the most probable peak) highly correlates with broader rocking curve width distribution. Prime novelty statement: This work provides an understanding on the most important factors that contribute to degradation of charge collection efficiency (CCE) in diamond based detectors and sensors. The CCE decays rapidly as the intensity of nitrogen vacancy phonon sideband approaches that of diamond 2nd order Raman peak which follows the relation: View the MathML sourceCCEINV=100/1+INV1.052. The energy resolution, that is the ratio of the energy spectrum width to the most probable peak, highly correlates with broader X-ray rocking curve width distribution. |
DS201511-1889 2015 | Yap, C.M., Tarum, A., Xiao, S., Misra, D.S. | MPCVD growth of 13 C-enriched diamond single crystals with nitrogen addition. | Diamond and Related Materials, in press available, 29p. | Technology | Synthetics - nitrogen |
| Abstract: This study describes the growth of 13C-enriched (100)-oriented diamond single crystals by the MPCVD (microwave plasma chemical vapour deposition) process. All crystals are at least 6 × 6 mm2 in area and 0.5-1.0 mm in thickness. The samples with nominal 13C percentages (R = [13C] / [13C + 12C]) of 0.011 (natural abundance), 0.10, 0.21, 0.24 and 0.34 were obtained by controlling the flow of the carbon-13 and carbon-12 methane feed gases. To obtain thicker and near-colourless quality 13C-enriched diamond, 190 ppm of nitrogen was added into the gas mixture. The shift towards lower frequency in the Raman peak positions and decrease in the thermal conductivities of the near-colourless crystals with increasing 13C percentages are similar to previous studies of isotopically-controlled diamond grown with no nitrogen additive. The images of the structural defects associated with 13C-enrichment obtained by spatially-resolved X-ray rocking curve measurement show distinct patterned structures that runs parallel to the < 100 > direction. Moreover, the broadening in the line width of the nuclear magnetic resonance (NMR) peak from sp313C correlates with increasing R. We also expand the study by injecting 500 ppm of nitrogen. Higher nitrogen concentration leads to the formation of brown crystals. The brown crystals show far greater 13C NMR peak intensity than the near-colourless. This suggests that paramagnetic nitrogen impurities in the brown crystals hasten the spin-lattice relaxation time of the 13C nuclear spin that resulted in higher intensity. The isotopic splitting observed for the localized vibrational mode of the NVH0 defect in brown crystals is attributed to the co-existence of both the 13C (3114.2 cm? 1) and 12C (3123.5 cm? 1). Unlike the isotopic splitting observed for NVH0 defect, the peak position of the Ns+ defect shifts towards lower frequency as R increases. Not only have we demonstrate the growth of bigger isotopically-controlled diamond single crystals, the results shown here have provided a framework to further investigate the interplay between 13C atoms and nitrogen impurity. |
DS201511-1895 2014 | Zhonghua, S., Taijin, L., Meidong, S., Jun, S., Jingjing, S. | High quality synthetic yellow orange diamond emerges in China. | Australian Gemmologist, Vol. 24, 7, pp. 167-170. | China | Synthetics |
DS201512-1910 2015 | D'Haenens-Johansson, U.F.S., Katrusha, A., Moe, K.S., Johnson, P., Wang, W. | Large colorless HPHT synthetic diamonds from new diamond technology. Using spectroscopic and gemological analysis. | Gems & Gemology, Vol. 51, 3, pp. 260-79. | Technology | Synthetics |
| Abstract: The Russian company New Diamond Technology is producing colorless and near-colorless HPHT-grown synthetic diamonds for the gem trade. Forty-four faceted samples synthesized using modified cubic presses were analyzed using a combination of spectroscopic and gemological techniques to characterize the quality of the material and determine the means of distinguishing them from natural, treated, and alternative laboratory-grown diamonds. These samples, with weights ranging from 0.20 to 5.11 ct, had color grades from D to K and clarity grades from IF to I2. Importantly, 89% were classified as colorless (D-F), demonstrating that HPHT growth methods can be used to routinely achieve these color grades. Infrared absorption analysis showed that all were either type IIa or weak type IIb, and photoluminescence spectroscopy revealed that they contained Ni-, Si-, or N-related defects. Their fluorescence and phosphorescence behavior was investigated using ultraviolet excitation from a long-wave/short-wave UV lamp, a DiamondView instrument, and a phosphorescence spectrometer. Key features that reveal the samples’ HPHT synthetic origin are described. |
DM201512-2229 2015 | Diamonds.net | Lab-grown diamond producer Scio's 2Q revenue doubles, net loss widens 8%. | Diamonds.net, Nov. 17, 1/4p. | Technology | News item - Scio |
DM201512-2262 2015 | Republic of Mining | 10 billionaires and Leonardo DiCaprio just invested in a start up that claims it can grow hundreds of real diamonds in 2 weeks. Diamond Foundry | business insider.com, Nov. 11, 2p. | Technology | News item - synthetics |
DM201512-2280 2015 | Rough-Polished | Up to 3 billion carats of synthetic diamonds nourish jewelery market - media. | rough-polished.com, Nov. 3, 1/4p. | Global | News item - synthetics |
DM201512-2317 2015 | The India Times | A new Siberian ice diamond created by Russian scientists will prove to be a game changer for the domestic industry. Cost around 1- 2 % of real. | TheIndiatimes.com, Nov. 16, 1/4p. | Russia | News item - synthetics |
DM201512-2321 2015 | The New York Times | Borrowing from solar and chip tech to make diamonds faster and cheaper. ( before Nanosolar) now Diamond Foundry | The New York Times, Nov. 11, 6p. | Technology | News item - Diamond Foundry |
DM201601-0066 2015 | Diamonds.net | Diamonds created at room temperature in North Carolin a State University lab. Q-carbon | Diamonds.net, Dec. 1, 1/4p. | United States, North Carolina | News item - synthetics |
DM201601-0110 2015 | Rough-Polished | Africa urged to sift synthetic diamonds out, call for Namibia to supply more rough diamonds locally. | rough-polished.com, Dec. 1, 1/4p. | Africa, Namibia | News item - synthetics |
DS201602-0217 2016 | Lan, Y., Liang, R., Lu, T. | Identification of a CVD synthetic diamond with a tree ring growth pattern. | Journal of Gemmology, Vol. 34, 8, pp. 702-710. | Technology | Synthetics |
DM201602-0360 2016 | Rough-Polished | IIa Technologies responds to Element Six patent infringement. | rough-polished.com, Jan. 26, 1/4p. | Technology | News item - Element Six |
DM201603-0508 2016 | Diamonds.net | Technical experts come together to launch the International Grown Diamond Association ( IGDA). | Diamonds.net, Feb. 4, 1p. | Global | News item - synthetics |
DM201603-0522 2016 | Jckonline | An open letter to Leonardo DiCaprio on lab grown diamonds. | jckonline.com, Jan. 28, 1p. | Technology | News item - synthetics |
DM201603-0550 2016 | Rough-Polished | Study results on consumer perception lab-grown diamonds. Frost & Sullivan | rough-polished.com, Jan. 26, 1/4p. | Technology | News item - synthetics |
DM201604-0672 2016 | Diamonds.net | GIA grades largest HPHT synthetic diamond to date. 5.03 blue | Diamonds.net, Feb. 25, 1/4p. | Technology | News item - synthetics |
DS201605-0826 2016 | D'Haenens-Johansson, U. | Identification of treated synthetic diamonds. | DCO Edmonton Diamond Workshop, June 8-10 | Technology | Synthetics |
DM201605-0969 2016 | Global Industry Analysis | Synthetic diamond market by manufacturing process and other end users. | Global Industry Analysis, Apr. 21, 1p. | Global | News item - synthetics |
DM201605-0981 2016 | Rapaport | Facing the lab-grown challenge. | Rapaport Magazine, April 5p. | Technology | News item - synthetics |
DM201605-1026 2016 | Sim, S. | Diamond Detectives … gemologists: if it's lab-grown, we can detect it. | Rapaport Magazine, Apr. 6p. | Technology | News item - synthetics |
DM201606-1138 2016 | Bates, R. | Can the natural and lab-grown diamond industries really get along? | www.jckonline.com, May 5, 2p. | Technology | News item - synthetics |
DS201606-1127 2016 | Wang, W., Moses, T. | High pressure, high temperature ( HPHT) technology for gem diamond synthesis - progress. | Gems & Gemology, Vol. 52, 1, p. 101-2. | Technology | Synthetics |
| Abstract: High-pressure, high-temperature (HPHT) technology for gem diamond synthesis has made rapid progress in the last few years. It is now being used to produce many melee-size diamonds around 2-3 mm in diameter and large colorless single crystals, all with significantly improved quality and growth rate. One Russian company is reportedly growing multiple large, gem-quality colorless diamond crystals in a single run (U.F.S. D’Haenens-Johansson et al., “Large colorless HPHT-grown synthetic gem diamonds from New Diamond Technology,” Fall 2015 G&G, pp. 260-279). Here we report on large diamond crystals manufactured using a similar technology by Jinan Zhongwu New Materials Co. Ltd in Shandong, China. We visited the Chinese factory in early March 2016 and obtained 50 crystals (figure 1). The crystals were examined using the instrumentation and techniques applied to all diamonds submitted to GIA for grading; all exhibited the typical characteristics of HPHT growth and were identified as synthetic. These were basically colorless, with only a few metallic inclusions observed. These crystals showed typical cuboctahedral morphology, with well-developed {100}, {110}, and {111} growth sectors and a weakly developed {113} sector. The crystals we obtained ranged from about 0.5 to 1.2 ct each. Absorption spectra in the infrared region showed they were type IIa diamond, but trace absorption from boron was detected (2800 cm-1). Detailed gemological and spectroscopic analyses are ongoing and will be reported separately. According to the manufacturer, large quantities of gem-quality colorless and blue diamonds are produced in this factory, in sizes up to 3.5 ct each. While the total production volume remains unclear, it is undoubtedly significant, and capacity is likely to expand in the near future. This strongly suggests that even more large HPHT synthetic diamonds will be introduced into the jewelry industry. |
DM201607-2539 2016 | Diamond Intelligence Briefing | Due Diligence score card: Supplier due diligence: The purity of Pure Grown Diamonds. | DIB ( courtesy of Chaim), Vol. 32, 876, June 13, pp. 6-12. | Technology | News item - synthetics |
DM201607-2540 2016 | Diamond Intelligence Briefing | Can a Lab-Grown diamond be dirty? Yes it can! | DIB ( courtesy of Chaim), Vol. 32, 876 June 13, pp. 13-14. | Technology | News item - synthetics |
DM201607-1534 2016 | Rough-Polished | Botswana plots against synthetics, to up diamond manufacturing working hours. | rough-polished.com, June 27, 1/4p. | Africa, Botswana | News item - synthetics |
DM201608-1509 2016 | Ehud Arye Laniado | Diamonds: not mined diamonds! Why we have to stop calling lab-grown products 'diamonds'. | info @laniado.com, Aug. 8, 4p. | Technology | News item - synthetics |
DS201608-1403 2016 | Fritsch, E. | Are near colorless synthetic diamonds truly difficult to identify? | GSA Annual Meeting, Abstract, 1p. | Technology | Synthetics |
| Abstract: There is a rising number of near-colorless synthetics diamonds detected in the market, which create concerns for the trade. The recent advent of near-colorless melee size synthetic diamonds has raised the question of how to test large numbers of small stones. Many have turned to specialized sorting machines, which are expensive and difficult to evaluate. The problem arises only within near-colorless type IIa diamond gems. This type is commonly identified by infrared spectroscopy, which is man- or instrument-intensive. For the jeweler-gemologist, this can be identified by UV transparency, which isolates type IIa and also the even rarer type IaB from other types. Then amongst type IIas, one has to determine which are synthetic. One of the most effective sorting methods is anomalous double refringence (ADR) observing between crossed polarizers in a high-index immersion liquid. However, this method finds its limit with very small diameter stones, as then the optical pathlength is so small that no birefringence is perceived. Another approach is luminescence, based on observation of the whole stone; typically synthetics luminesce stronger in shortwave than longwave ultraviolet: this is effective to pinpoint HPHT-grown colorless and yellows, but useless for generally inert CVD-grown ones. Then the observation of luminescence zoning is usually conclusive. It necessitates expensive specialized instruments and also, a good knowledge of the very varied forms of natural diamond growth to avoid mistaking a natural for a synthetic. Finally, the last resort is luminescence spectroscopy. this typically involves laser excitation with several lasers, at low temperature. Further, this implies a very thorough knowledge of natural and synthetic diamond emissions, which limits this approach to a small number of laboratories. In practice, for a small number of stones, the definitive interpretation of spectra may remain a matter of discussion. Thus, the separation of natural from synthetic diamond mélé may appear very difficult. Yet, there are a limited number of simple devices which can help the jeweler-gemologist, even more the diamond professional. The last resort appears to be luminescence spectroscopy, but it is expensive and a great deal of interpretation is required. Automated instruments offer only limited help. |
DM201608-1555 2016 | Rapaport | Town Hall debate: an open discussion on lab-grown diamonds. | Rapaport Magazine, July 2p. | Technology | News item - synthetics |
DM201608-1575 2016 | Rough-Polished | Laboratory grown diamond sales triple. NPD group tracker project. | rough-polished.com, July 1, 1/4p. | Global | News item - synthetics |
DM201608-1582 2016 | Rough-Polished | Siberian scientists have developed technique to produce cheap artificial diamonds. | rough-polished.com, July 5, 1/4p. | Russia | News item - synthetics |
DM201608-1591 2016 | Rough-Polished | GII inducts new instrument for detection of synthetic diamonds. | rough-polished.com, July 14, 1/4p. | India | News item - synthetics |
DS201608-1441 2016 | Song, Z., Lu, T., Tang, S., Ke, J., Su, J., Gao, B., Bi, L., Wang, D. | Identification of colourless HPHT grown synthetic diamonds from Shandong China. | The Journal of Gemmology, Vol. 35, 2, pp. 14-147. | China | Synthetics |
DM201608-1630 2016 | Treadgold, T. | Diamonds disrupted: sales fall as synthetics rise. | Forbes, June 31, 1p. | Technology | News item - synthetics |
DM201609-1793 2016 | Reuters | De Beers stakes its reputation on spotting the difference ( synthetics). | De Beers , Aug. 17, 3p. | Technology | News item - synthetics |
DM201610-1999 2016 | Rough-polished | Synthetic diamonds pose a serious threat says ex-Botswana minerals minister. | rough-polished.com, Aug. 31, 1/4p. | Africa, Botswana | News item - synthetics |
DS201611-2098 2016 | Babich, Yu.V., Feigelson, B.N., Chepurov, A.I. | Manifestation of nitrogen interstitials in synthetic diamonds obtained usign a temperature gradient technqiue ( Fe-Ni-C system). | Geochemistry International, Vol. 54, 10, pp. 992-927. | Technology | Synthetics |
| Abstract: The IR-peak 1450 cm-1 (H1a-center) associated with nitrogen interstitials have been studied in nitrogen-bearing diamonds synthesized at high P-T parameters in the Fe-Ni-C system. FTIR study shows that manifestation of this nitrogen form is restricted to the regions of active transformation of C-defects into A-defects, which confirms the connection of its formation with C => A aggregation process. An examination of the dependence of the 1450 cm-1 peak on the degree of nitrogen aggregation indicates that H1a-centers are not only formed during C/A aggregation but also disappear simultaneously with the end of C => A transformation. Established facts suggest direct involving of nitrogen as interstitials in the C => A aggregation and serve as strong experimental argument in support of the "interstitial" mechanism of nitrogen migration during aggregation in diamonds containing transition metals. |
DM201611-2224 2016 | Rough-polished | CVD synthetic diamond over 5 carats identified by GIA. | rough-polished.com, Oct. 17, 1/4p. | Technology | News item - synthetics |
DS201611-2140 2016 | Shigley, J.E. | Identifying lab grown diamonds. Review | GIA, July 25, 18p. | Technology | Synthetics - review |
DM201612-2352 2016 | Bates, R. | Barneys and Diamond Foundry are making a big mistake with their lab-grown diamond line. Their use of non-FTC- approved descriptor is irresponsible. | JCK Online memo, Nov. 11, 1p. | Technology | News item - synthetics |
DS201612-2296 2016 | Eaton-Magana, S., Shigley, J.E. | Observations on CVD-grown synthetic diamonds: a review. | Gems & Gemology, Vol. 52, 3, pp. 222-245. | Technology | Synthetics |
| Abstract: This article presents statistical data and distinctive features from several hundred faceted CVD-grown synthetic diamonds examined by GIA researchers from 2003 through June 2016. This study, the first comprehensive summary published on such a large number of gem-quality CVD synthetics, describes the reliable means of identifying them, with a focus on material currently marketed for jewelry use. Most CVD synthetic diamonds analyzed by GIA have been in the near-colorless or pink color ranges, with clarity grades comparable to those of their natural counterparts. Faceted CVD samples are generally 2 ct or less, though the sizes are increasing. They can be identified by their distinctive fluorescence pattern using the DiamondView imaging instrument, and by the detection of the silicon-vacancy defect using photoluminescence (PL) spectroscopy. Some visual gemological characteristics provide indicators, but not definitive proof, of CVD origin. |
DM201612-2417 2016 | Newsweek | Why diamonds could be about to lose their lustre. | Newsweek Opinion, Nov. 13, 2p. | Technology | News item - synthetics |
DM201612-2428 2016 | Republic of Mining | Man made diamonds though more affordable, pose challenges on jewelers row. | chicagotribune.com, Nov. 22, 1/4p. | Global | News item - synthetics |
DM201701-0162 2016 | Weinstein, D. | Lab-grown diamonds come into their own. | International Gemological Institute Research Institute, Dec. 1, 5p. | Technology | News item - synthetics |
DM201702-0269 2017 | CNN | Can man made diamonds compete with the real deal? | cnn.com, Jan. 16, 1/2p. | Global | News item - synthetics |
DM201702-0266 2017 | Even-Zohar, C. | The economics of lab-grown gem diamond mining. | Diamond Intelligence Briefs ( noted only), DIB 883, Jan. 2, 8p. | Global | News item - synthetics |
DM201702-0304 2017 | Idex Online | Synthetic diamonds may replace GPS make driverless cars a reality… ( more sensitive). | Idexonline.com, Jan. 2, 1/4p. | Technology | News item - Synthetics |
DM201703-0524 2017 | Rough-polished | Element Six intends to move all production to sites in Ireland and South Africa. | rough-polished.com, Feb. 1, 1/4p. | Europe, Ireland, Africa, South Africa | News item - Element Six |
DM201703-0568 2017 | Rough-polished | Diamond Services expands screening services for synthetic rough diamonds. | rough-polished.com, Feb. 22, 1/4p. | Technology | News item - Diamond Services |
DM201703-0572 2017 | The Israeli Diamond Industry | Could synthetic diamonds turn the dream of driverless cars into reality? ( sensitivity of magnetic waves could replace GPS systems). | en.israelidiamond.co.il, Feb. 1, 1/2p. | Technology | News item - Element Six |
DM201704-0684 2017 | Diamonds.net | GIA finds significant undisclosed synthetics. | Diamonds.net, March 7, 1/4p. | Technology | News item - synthetics |
DM201704-0699 2017 | Even-Zohar, C. | The economics of lab-grown gem diamond 'mining'. | Idex Magazine, March No. 323, pp. 28-37. | Technology | News item - Swaroski Diama |
DS201704-0646 2017 | Schmetzer, K., Gilg, H.A., Vaupel, E. | Synthetic emeralds grown by Richard Nacken in the mid-1920's: properties, growth technique, and historical account. | Gems & Gemology, Vol. 52, 4, pp. 368-392. | Europe, Germany | Synthetic - emeralds |
| Abstract: Chemical and microscopic examination of the first gem-quality synthetic emeralds of facetable size proves that Prof. Richard Nacken grew two main types of emerald by flux methods in the mid-1920s. One of these two types, grown with colorless beryl seeds in molybdenum-bearing and vanadium-free fluxes, has not previously been mentioned in the literature and would appear to be unknown to gemologists. The other main type, which has already been described in gemological publications, was grown from molybdenum- and vanadium-bearing fluxes. In drawing these conclusions, rough and faceted synthetic emeralds produced by Nacken were available for study from two principal sources: the Deutsches Museum in Munich, to which Nacken had donated samples in 1961, and family members who had inherited such crystals. Chemical, morphological, and microscopic properties are given, and circumstances concerning the developmental history of the Nacken production, including the possibility of collaboration with IG Farben (a subject of past speculation), are discussed as well. The latter has recently been elucidated by the discovery of original documents from the IG Farben gemstone plant, preserved in the Archives of the German Federal State of Saxony-Anhalt. |
DS201705-0813 2017 | Butler, J.E., Feigelson, B.N. | Laboratory-Grown Diamonds. | lithographie.org, No. 19, pp. 114-127. | Technology | Book - synthetics |
DS201705-0822 2017 | Collins, A.T. | Comment on the apparent anomalous reflectance of a Sumitomo synthetic diamond. | Journal of Gemmology, Vol. 35, 5, p. 450. | Technology | Synthetics |
DM201705-0947 2017 | Idex online | Synthetic gem production 4.2m carats, says Indian study. | idexonline.com, April 17, 1/4p. | India | News item - synthetics |
DM201705-0990 2017 | Rough-polished | Signet unveils details on synthetic diamond detectors testing. | rough-polished.com, April 10, 1/4p. | Technology | News item - Signet |
DM201705-1005 2017 | Rough-polished | Hot topic in Geneva: the issue of synthetic diamonds in watchmaking. | rough-polished.com, April 25, 1/4p. | Technology | News item - synthetics |
DM201705-1016 2017 | Rough-polished | Report from Mordor intelligence on global synthetic diamond market. | rough-polished.com, April 29, 1/4p. | Global | News item - synthetics |
DM201706-1169 2017 | Ehud Arye Laniado | The history of Lab grown diamonds. | info @laniado.com, May 17, 3p. | Technology | News item - synthetics |
DM201706-1242 2017 | The Israeli Diamond Institute | Synthetics seen as existential threat. | israeli diamond institute.co.il, May 3, 20p. | Global | News item - synthetics |
DM201707-1445 2017 | Ehud Arye Laniado | The history of lab grown diamonds: industrial applications. | info @laniado.com, June 1, 3p. | Technology | News item - synthetics |
DM201707-1448 2017 | Ehud Arye Laniado | The history of lab grown diamonds: retail. | info @laniado.com, June 7, 3p. | Technology | News item - synthetics |
DM201707-1452 2017 | Even-Zohar, C. | Pure grown diamonds: quo vadis? Indian indictments might reverberate on IIa Technologies and its products. Potential imbriglio for U.S. stakeholders: distributors, retailers and consumers. | Diamond Intelligence Briefing, Vol. 33, no. 889-990, May 10. * by permission | India, global | News item - synthetics |
DM201708-1833 2017 | Diamonds.net | GIA finds baffling flaw in CVD diamond. | Diamonds.net, July, 2, 1/2p. | Technology | News item - synthetics |
DM201708-1835 2017 | Diamonds.net | Scio Diamond to up synthetics production. | Diamonds.net, July 13, 1/4p. | United States, South Carolina | News item - Scio |
DM201709-2108 2017 | Diamonds.net | Diamond Foundry opens synthetics store ( San Francisco) | diamonds.net, Aug. 17, 1/4p. | United States | News item - Diamond Foundry |
DM201709-2120 2017 | Mining.com | Scientists from Brazilian Universidade Federal de minas Gerais found new evidence that shows diamonds can be forged in thin films called diamondene. | mining.com, Aug. 1, 1/2p. | Technology | News item - diamondene |
DM201709-2162 2017 | Rough-polished | A brilliant future of lab diamonds - media. | rough diamond.com, Aug. 22, 1/4p. | Global | News item - synthetics |
DM201710-2323 2017 | Diamonds.net | Most retailers won't sell synthetics anytime soon. | diamonds.net, Sept. 5, 1/4p. | Global | News item - synthetics |
DM201710-2345 2017 | Forbes | Diamonds disrupted: how man-made diamonds will disrupt the mined diamond industry. | Forbes.com, Sept. 2, 5p. | Global | News item - synthetics |
DM201710-2425 2017 | Rough-polished | DTCB says new synthetic diamonds detecting device to boost consumer confidence. | roughdiamond, Sept. 21, 1/4p. | Africa, Botswana | News item - SYNTHdetect |
DM201710-2450 2017 | Zimnisky, P. | The future challenges of synthetics. | Zimnisky.com, Oct. 3, 2p. | Technology | News item - synthetics |
DM201712-2785 2017 | Diamonds.net | GIA finds synthetic diamond with forged inscription. | diamonds.net, Nov. 13, 1/4p. | Technology | News item - synthetics |
DS201712-2684 2017 | Eaton-Magana, S., Shigley, J.E., Breeding, C.M. | Observations on HPHT-grown synthetic diamonds: a review. | Gems & Gemology, Vol. 53, 3, pp. 262-285. | Technology | synthetics |
| Abstract: his article presents statistical data and distinctive features for several thousand HPHT-grown synthetic diamonds examined by GIA from 2007 through 2016. This study, the first comprehensive summary published on such a large number and wide variety of samples, describes the reliable means of identifying them, with a focus on material currently marketed for jewelry use. The color of HPHT synthetic diamonds analyzed by GIA has shifted noticeably during this time—in the early years, orange-yellow, yellow, and yellow-orange samples comprised the overwhelming majority, while colorless and blue samples are much more prevalent today. HPHT synthetics are making inroads into the large diamond market, with cut stones larger than 10 carats, as well as the colorless melee market, where small HPHT synthetics are being mass-produced in China. HPHT synthetics can be identified by their distinctive fluorescence patterns using the DiamondView luminescence imaging instrument, the lack of “strain” (anomalous birefringence) when viewed through crossed polarizers, and to a lesser extent by the detection of various features in photoluminescence (PL) spectroscopy. This material may also display magnetism and a short-wave fluorescence and phosphorescence reaction that are inconsistent with similarly colored natural diamonds. |
DM201712-2801 2017 | Financial Times of London | Backgrounder on Amish Shah and laboratory diamond sales. | financialtimes.com, Nov. 1, 4p. | Global | News item - synthetics |
DM201801-0124 2017 | Forbes | The diamond marketer leading the fight against lab-grown stones. NOT diamonds Lieberherr CEO of DPA | Forbes, Dec. 14, 2p. | Global | News item - synthetics |
DS201802-0225 2018 | Chen, N., Ma, H., Chen, L., Yan, B., Fang, C., Liu, X., Li, Y., Guo, L., Chen, L., Jia, X. | Effects of S on the synthesis of type 1b diamond under high pressure and high temperature. | International Journal of Refractory Metals & Hard Materials, Vol. 71, pp. 141-146. | Technology | synthetic diamonds |
DM201802-0361 2018 | Rough-polished | Global synthetic diamonds market is estimated to be worth $ 28.26 bn by 2024. | rough-polished.com, Jan. 12, 1/4p. | Global | News item - synthetics |
DM201803-0493 2018 | Allafrica | Diamond mining under threat: synthetics. | allafrica.com, Feb. 8, 1/4p. | Global | News item - synthetics |
DM201803-0557 2018 | Mining.mx | Millenials being lied to by synthetic diamond manufacturers. | miningmx.com, Feb. 6, 1/4p. | Global | News item - synthetics |
DM201803-0589 2018 | Rough-polished | We take threat from synthetic diamonds seriously - Namibian official. | rough-polished, Feb. 8, 1/4p. | Africa, Namibia | News item - synthetics |
DM201804-0783 2018 | Creamers Mining Weekly | Rising synthetic diamond output lifts discount to natural stones. | creamersmining weekly.com, Mar. 22, 1/4p. | Global | News item - synthetics |
DS201804-0684 2018 | D'Haenens-Johansson, U. | Synthesis of man-made gem diamonds and their detection. | 4th International Diamond School: Diamonds, Geology, Gemology and Exploration Bressanone Italy Jan. 29-Feb. 2nd., p. 16. abstract | Technology | synthetics |
DM201804-0794 2018 | Diamonds.net | IGI Launches Synthetics Screening Center | diamonds.net, Mar. 21, 1/4p. | India | News item - synthetics |
DM201804-0813 2018 | London Mining Journal | Lab-created diamond prices on the wane. | mining journal.com, Mar. 19, 1/4p. | Global | News item - synthetics |
DM201804-0877 2018 | Rough-polished | MGCJ to launch portable synthetic diamond identification kit. | rough-polished .com, Mar. 26, 1/4p. | Global | News item - synthetics |
DM201804-0884 2018 | Zimnisky, P. | Paul Zimnisky: the price of lab created diamonds continue to fall. | paul.zimnisky.com, Mar. 22, 1p. | Global | News item - synthetics |
DM201805-1128 2018 | Rough-polished | MGCJ founder Branko Deljanin: production of synthetic diamonds is still larger than consumption. | rough-polished, Apr. 9, 3p. | Global | News item - synthetics |
DM201805-1137 2018 | Rough-polished | HPHT grown diamonds treated with irradiation can escape detection as synthetics. | rough-polished, Apr. 18, 1/4p. | Technology | News item - synthetics |
DM201805-1142 2018 | Rough-polished | HDGR challenges alert by Hong Kong company on irradiation treated HPHT grown diamonds. | rough-polished, Apr. 19, 1/4p. | Technology | News item - synthetics |
DM201805-1144 2018 | Rough-polished | The production of synthetic diamonds continues to grow. | rough-polished, Apr. 19, 1/4p. | Technology | News item - synthetics |
DM201805-1151 2018 | Rough-polished | Zimnisky: hard to protect lab diamond price as production methods, economics improve. | rough-polished, Apr. 23, 1p. | Global | News item - synthetics |
DS201805-0990 2018 | Wang, H.A.O., Cartier, L.E., Baumgartner, L.P., Bouvier, A-S., Begue, F., Chalain, J-P., Krzemnicki, M.S. | A preliminary SIMS study using carbon isotopes to separate natural from synthetic diamonds. | Journal of Gemmology, Vol. 36, 1, pp. 38-43. | Technology | synthetics |
DS201806-1209 2018 | Ardon, T., Ahline, N. | Fancy deep brown-orange CVD synthetic diamond. 0.56 ct | Gems & Gemology, Vol. 54, 1, p. 64 | Technology | synthetics |
DM201806-1318 2018 | Diamond World Magazine | Americans do not consider diamond created in a factory: only natural diamonds are real. | diamond world magazine.com, May 24, 1/4p. | United States | News item - synthetics |
DM201806-1324 2018 | Diamonds.net | Buffett store (Borheims) to sell world's largest pink synthetic. | diamonds.net, May 9, 1/4p. | United States | News item - synthetics |
DM201806-1332 2018 | Diamonds.net | 9 ct synthetic stone sets world record. WD Lab grown | diamonds.net, May 29, 1/4p. | Global | News item - synthetics |
DS201806-1221 2018 | Eaton-Magana, S. | Five CVD synthetics greater than three carats: quality factors | Gems & Gemology, Vol. 54, 1, p. 63. | Technology | synthetics |
DM201806-1380 2018 | Republic of Mining | Millenial attitudes are forcing a massive change in the diamond industry. | businessinsider, May 10, 1/4p. | Global | News item - synthetics |
DM201806-1383 2018 | Reuters | The techno-whiz who grows gem-quality diamonds. Shah | Crainsbusiness, May 3, 1/4p. | United States | News item - synthetics |
DM201807-1595 2018 | Diamonds.net | Diamond Foundry lauds De Beers synthetics bid. | diamonds.net, June 3, 1/4p. | United States | News item - Diamond Foundry |
DM201807-1597 2018 | Diamonds.net | GIA to hold synthetics detection seminars. | diamonds.net, June 6, 1/4p. | United States | News item - synthetics |
DM201807-1607 2018 | Ehud Arye Laniado | De Beers shakes industry foundations Lab-Grown initiative. Lightbox | info @laniado.com, June 4, 3p. | Global | News item - Lightbox |
DS201807-1492 2018 | GIA | Dr. D. Twitchen ( CVD Element Six) discussion using magnetic resonance and optical techniques to study how defects in diamond affect colour and electrical conductivity. Keynote speaker | GIA Symposium , Oct. 7-9, Carlsbad CA | United States, California | synthetics |
DM201807-1616 2018 | Idex online | De Beers causes waves with new lab-grown diamond jewelry. | idexonline.com, June 1, 3p. | Global | News item - Lightbox |
DM201807-1617 2018 | Idex online | De Beers lab-grown diamond jewelery plans causing industry waves. | idexonline.com, June 5, 1/2p. | Global | News item - synthetics |
DM201807-1623 2018 | London Mining Journal | They are low cost, pretty stones. De Beers Group and lab made synthetic sector. | miningjournal, May 3, 1/4p. | Global | News item - Element Six |
DM201807-1626 2018 | Marketbiz | Global man made diamond market share 2018 -2025. Element Six, Henan Huanghe, Whirlwind, CR Gems Diamond, Jinqu Chaouing and Zhengzhou Sino-crystal | marketbiz.com, June 13, 3p. Summary | Global | News item - synthetics |
DM201807-1646 2018 | Reuters | Botswana strikes deal with De Beers over synthetic diamonds. Govt engaged throughout the De Beers synthetics initiative. | journaldu cameroun.com, June 25, 1/4p. | Africa, Botswana | News item - Lightbox |
DM201807-1654 2018 | Rough-polished | Zimnisky on De Beers' Lightbox: it’s a strategic bold move that will benefit the entire natural diamond industry. Interview and comments | rough-polished, June 1, 2p. | Global | News item - Lightbox |
DM201807-1674 2018 | Rough-polished | Opsydia to mark Lightbox synthetic diamonds. Laser technology | rough-polished, June 18, 1/4p. | Global | News item - Lightbox |
DM201807-1693 2018 | The Israeli Diamond Industry | Laniado : De Beers' lab grown initiative - an earthquake. | israelidiamond industry.co.il, June 11, 1p. | Global | News item - Lightbox |
DM201807-1696 2018 | Zimnisky, P. | The price of lab-created diamonds continue to fall. Synthetics manufacturers eye high-tech market. | Diamonds in Canada, June pp. 15-18. | Global | News item - synthetics |
DS201808-1733 2018 | Choudary, G. | Investigating a fake rough. Mentions cubic zirconium, topaz as diamond octahedrons on. P. 28. | Gems & Jewellery, Vol. 27, 2, pp. 26-29. | Technology | diamond - fake |
DM201808-1846 2018 | Diamonds.net | GIA grades largest lab grown pink. 5.01 ct | diamonds.net, July 4, 1/4p. | United States, California | News item - synthetics |
DM201808-1857 2018 | Diamonds.net | New US Federal Trade Commission guidelines still require full disclosure for synthetic diamonds. | diamonds.net, July 27, 1p. | United States | News item - synthetics |
DM201808-1867 2018 | Idex Memo | FTC's revised guides stoke up flames between natural and synthetic diamond sectors. | idexonline.com, July 26, 1p. | United States | News item - synthetics |
DS201808-1756 2018 | Kaboli, S., Burnley, P.C. | Direct observations of crystal defects in polycrystalline diamond. CVD | Materials Characterization, Vol. 142, pp. 154-161. | Global | synthetics |
| Abstract: Crystal defects are abundant in synthetic diamond produced by chemical vapor deposition (CVD). We present the first images of crystal defects in a bulk polycrystalline CVD diamond sample using general electron channeling contrast imaging (ECCI) in a field emission scanning electron microscope (FE-SEM). For enhancement of channeling contrast of this material, we introduce a novel protocol for diamond surface preparation that involves acid etching. Using this protocol, we imaged three types of crystal defects including twins, stacking faults and dislocations. Each defect was identified based on its appearance in electron channeling contrast (ECC) micrographs. We analyzed grains containing twins and dislocations using electron backscatter diffraction (EBSD) crystal orientation mapping. We found a large population of grains that contained ?3 type twins on {111} planes with a 60°?111? angle-axis pair of misorientation for twin boundaries. In addition, we identified {111} stacking faults and {111} helical dislocations. These observations are in agreement with reports of crystal defects in CVD diamond thin foils studied by a transmission electron microscope (TEM). |
DM201808-1902 2018 | Reuters | De Beers breaks ground on $ 94 m lab grown diamond plant in Oregon scheduled to produce 0.5 mcts of CVD diamonds for Lightbox jewelery. | reuters.com, June 30, 1/4p. | United States, Oregon | News item - Lightbox |
DS201808-1785 2018 | Rose, B.C. ,Huang, D., Zhang, Z-H., Stevenson, P., Tyryshkin, A.M., Sangtawesin, S., Srinivasan, S., Loudin, L., Markham, M.L., Edmonds, A.M., Twitchen, D.J., Lyon, S.A., de Leon, N.P. | Observation of an environmentally insensitive solid-state spin defect in diamond. | Science , Vol. 361, July 6, p. 60-63. | Technology | synthetic |
| Abstract: Engineering coherent systems is a central goal of quantum science. Color centers in diamond are a promising approach, with the potential to combine the coherence of atoms with the scalability of a solid-state platform. We report a color center that shows insensitivity to environmental decoherence caused by phonons and electric field noise: the neutral charge state of silicon vacancy (SiV0). Through careful materials engineering, we achieved >80% conversion of implanted silicon to SiV0. SiV0 exhibits spin-lattice relaxation times approaching 1 minute and coherence times approaching 1 second. Its optical properties are very favorable, with ~90% of its emission into the zero-phonon line and near -transform-limited optical linewidths. These combined properties make SiV0 a promising defect for quantum network applications. |
DS201808-1792 2018 | Tang, S., Su, J., Lu, T., Ma, Y., Ke, J., Song, Z., Zhang, S., Liu, H. | A thick overgrowth of CVD synthetic diamond on a natural diamond. | Journal of Gemmology, Vol. 36, 2, pp. 134-141. | Technology | synthetics |
| Abstract: In October 2017, a natural diamond overgrown by a thick layer of CVD synthetic diamond was identified at the Beijing laboratory of the National Gemstone Testing Center (NGTC). The round-brilliant-cut sample was near-colourless and weighed 0.11 ct. No sign of the overgrowth was observed with magnification. However, DiamondView images showed a distinct boundary in the pavilion separating layers of different luminescence: The upper layer displayed red fluorescence with greenish blue phosphorescence, while the lower portion showed deep blue fluorescence and no phosphorescence. Infrared spectroscopy revealed that the upper layer was type IIa and the lower portion was type Ia. Ultraviolet-visible-near infrared (UV-Vis-NIR) spectroscopy recorded an unusual co-existence of the N3 centre at 415 nm together with absorption due to [Si-V]-defects at 737 nm. The photoluminescence (PL) spectrum confirmed a high level of [Si-V]-defects. The approximate thickness of the CVD synthetic layer was ~740 µm, which is much thicker than previously reported for such overgrowths. The presence of the N3 centre in the natural diamond layer caused this sample to be passed as natural by various screening instruments. Luminescence imaging is key to identifying such overgrowths, and should be relied upon more heavily in the screening procedures used by gemmological laboratories in the future. |
DS201808-1793 2018 | Temming, M. | Designer diamonds could one day help build a quantum internet. Overview (see Rose reference) | Science News, July 6, 1p. | Global | synthetic |
| Abstract: A new kind of artificial diamond is a cut above the rest for quantum memory. Unlike other synthetic diamonds, which could either store quantum information for a long time or transmit it clearly, the new diamond can do both. This designer crystal, described in the July 6 Science, could be a key building block in a quantum internet. Such a futuristic communications network would allow people to send supersecure messages and connect quantum computers around the world (SN: 10/15/16, p. 13). Synthetic diamond can serve as quantum storage thanks to a type of flaw in its carbon lattice, where two neighboring carbon atoms are replaced with one noncarbon atom and an empty space (SN: 4/5/08, p. 216). This pairing exhibits a quantum property known as spin, which can be in an "up" state, a "down" state or both at once. Each of those states reflects a bit of quantum data, or qubit, that may be 1, 0 or both at once. A diamond transmits qubits by encoding them in light particles, or photons, that travel through fiber-optic cables. Qubit-storing diamond defects are typically made with nitrogen atoms, which can store quantum data for milliseconds - a relatively long time in the quantum realm (SN: 4/23/11, p. 14). But nitrogen defects can’t communicate that data clearly. They emit light particles at a broad range of frequencies, which muddles the quantum information written into the photons. Defects made with silicon atoms emit light more precisely, but until now haven’t been able to store qubits for longer than several nanoseconds due to their electrical interactions with nearby particles, explains Nathalie de Leon, an electrical engineer at Princeton University. De Leon and colleagues got around this problem by forging silicon defects in a diamond infused with boron. This extra chemical ingredient shielded the delicate silicon defects from electrical interactions with nearby particles, extending the defects’ quantum memory. The boron-infused crystal nearly rivaled the long-term quantum memory of nitrogen defects, storing qubits for about a millisecond. And it gave a clean photon readout, emitting about 90 percent of its photons at the exact same frequency-compared to just 3 percent of photons spat out by nitrogen defects. Tweaking the environment of the silicon defects was "an extremely creative way" to help keep a better grip on qubits, says Evelyn Hu, an applied physicist and electrical engineer at Harvard University not involved in the work. This new artificial diamond could be used to construct devices called quantum repeaters for long-distance quantum communications, says David Awschalom, a physicist and quantum engineer at the University of Chicago who wasn’t involved in the work. Qubit-carrying photons can travel only up to about 100 kilometers through optical fiber before their signal gets scrambled (SN: 9/30/17, p. 8). Quantum repeaters that catch, store and re-emit photons could serve as stepping stones between fiber-optic cables to extend the reach of future networks. |
DS201809-2008 2018 | Chapman, J., Dejanin, B. | An overview of synthetic diamond detection - methods and instruments. | The Australian Gemmologist, Vol. 26, 9-10, pp. 209-216. | Global | synthetics |
DM201809-2152 2018 | DDIGLOBAL | How the recent FTC decision on synthetic diamonds might impact artisanally mined diamonds. | ddiglobal.org, Aug. 16, 1p. | Global | News item - synthetics |
DM201809-2165 2018 | Diamonds.net | Melee parcel contains just one natural stone. GIA ( in 1,093 | diamonds.net, Aug. 16, 1/4p. | Global | News item - synthetics |
DM201809-2177 2018 | Even-Zohar, C., Navakar, P. | Fire in the hole.De Beers and Lightbox | Idexmagazine.com, pp. 26-39. | Global | News item - Lightbox |
DM201809-2178 2018 | Even-Zohar, C., Navakar, P. | History and commentary on Lightbox and future. | Solitaire International.com, Aug. 11p. Pdf | Global | News item - Lightbox |
DM201809-2183 2018 | Forbes | The jewelery industry grapples with the real impact of lab-grown diamonds. | forbes.com, Aug. 14, 1p. | Global | News item - synthetics |
DS201809-2025 2018 | Gems & Gemology | Chart: Features of synthetic diamond chart in colour. | Gems & Gemology, Vol. 54, 2, p. 150. | Global | synthetics |
DM201809-2190 2018 | JCK | Zharkov started a lab-grown venture, called Ultra C, that will be based in Switzerland, with subsidiaries in United States, Russia and Singapore. 'new age diamonds' | jckonline.com, Aug. 21, 1p. | Russia | News item - synthetics |
DM201809-2250 2018 | Rough-polished | Lab created diamond jewelery market to grow to $ 15B by 2035. Zimnisky | rough-polished, Aug. 28, 1/2p. | Global | News item - synthetics |
DS201809-2118 2018 | Zaitsev, A.M., Moe, K., Wang, W. | Defect transformations in nitrogen doped CVD diamond during irradiation and annealing. | Diamond and Related Materials, doi:101016/j.diamond.2018.07.017 | Russia | synthetics |
| Abstract: Nitrogen-doped CVD diamond treated with electron irradiation and subsequent annealing at temperatures from 860 to 1900?°C was studied using fluorescence imaging, optical absorption and photoluminescence. It was found that nitrogen impurity produces many optical centers active throughout the infrared and visible spectral ranges. The most prominent of them active in IR spectral range are the centers related to nitrogen-hydrogen complexes. They produce absorption lines at 2827, 2874, 2906, 2949, 2990, 3031, 3107, 3123 and 3310?cm?1. Two characteristic absorptions at wavenumbers 1293?cm?1 and 1341?cm?1 were tentatively ascribed to a modified form of nitrogen A-aggregates. In the visible and near IR spectral ranges, characteristic nitrogen-related centers have zero-phonon lines (ZPLs) at 457, 462, 489, 498, 722.5, 852.5, 865.5, 868.5, 908, 921.5 and 924.5?nm. Some of them, e.g. 457, 462 and 498?nm centers, are unique of CVD diamond. It has been confirmed that the brightest pink color of electron-irradiated nitrogen-doped CVD diamond is produced by annealing at temperatures about 1000?°C. Annealing at temperatures over 1600?°C destroys the irradiation-induced pink color. It was found that the center 489?nm is a major absorption feature in the visible spectral range of electron-irradiated, nitrogen-doped CVD diamond. Green color of electron-irradiated, nitrogen-doped CVD diamond is caused by combined absorption of GR1 center and 489?nm center. It has been confirmed that NV defects produced in CVD diamond during growth are very temperature stable. They survive heating at temperatures at least 2000?°C. In contrast, NV defects produced by irradiation may anneal out at temperatures as low as 1600?°C. This much lower thermal stability of the radiation-induced NV defects is the result of their interaction with other radiation defects produced in their vicinity. A conclusion has been made that in nitrogen-doped CVD diamonds nitrogen atoms may form clusters. These clusters are probably the origin of the broad band luminescence at wavelengths 360, 390, 535 and 720?nm and a strong broadening of ZPLs of many optical centers. |
DM201810-2438 2018 | Forbes | Diamonds face a laboratory-grown future but De Beers will retain control. | forbes.com, Sept. 28, 2p. | Global | News item - synthetics |
DS201810-2320 2018 | Gem Notes | Reduced phosphorescence of type II HPHT grown synthetic diamonds after electron beam irradiation. | The Journal of Gemmology, Vol. 36, 3, pp. 208-210. | Global | synthetics |
DM201810-2470 2018 | National Post | Lab-made diamonds for less: why De Beers's plan worries rivals. | nationalpost.com, Sept. 5, 1p. | Global | News item - synthetics |
DM201810-2515 2018 | Wall Street Journal | Diamond mines are drying up. Are lab-grown gems the answer? Paul Zimnisky | wallstreetjournal.com, Sept. 26, 1p. | Global | News item - synthetics |
DM201810-2517 2018 | Zimnisky, P. | Lab-created diamond jewelry market forecasted to grow to $ 15B by 2035. | paul@paul zimnisky.com, Aug. 28, 5p. | Global | News item - synthetics |
DM201811-2647 2018 | Creamers Mining Weekly | De Beers eyes tech markets for synthetic diamonds future. ( quantum computing.. Element Six expansion) | creamersminingweekly.com, Oct. 19, 1/4p. | Global | News item - synthetics |
DM201811-2668 2018 | GQ Magazine | Lab-grown diamonds: they're real, and they're spectacular. | gq.com, Oct. 16, 2p. | Global | News item - synthetics |
DM201811-2673 2018 | IGI | The FICCI organized a Workshop " Know your Jewellery"…. Discusses red diamonds | IGI.com, Oct. 16, 2p. | India | News item - IGI |
DM201811-2676 2018 | JCK Daily News | De Beers Lightbox brand: early reviews and future plans. | jckonline.com, Oct. 5, 4p. | Global, United States, Oregon | News item - Lightbox |
DM201811-2689 2018 | Reuters | Diamond trade must reform in face of threat from synthetic stones: U.S. | reuters.com, Oct. 2, 1/2p. | United States | News item - synthetics |
DM201811-2697 2018 | Rough-polished | U.S. says diamond trade should reform to fend off synthetic threat. | rough-polished.com, Oct. 4, 1/4p. | United States | News item - synthetics |
DM201811-2709 2018 | Rough-polished | Zharkov: High technology make it possible to create a product that can be obtained in natural stones only for very big money. | rough-polished.com, Oct. 10, 1p. | Global | News item - synthetics |
DM201812-2952 2018 | Diamonds.net | Major US retailers embrace synthetic diamonds. | diamonds.net, Nov. 3, 1/4p. | United States | News item - synthetics |
DM201812-2977 2018 | Hiyate, A. | De Beers launches Lightbox. | Diamonds In Canada, Nov. pp. 9-11. | Global | News item - Lightbox |
DS201812-2829 2018 | Kazuchits, N.M., Rusetsky, M.S., Kazuchits, V.N., Korolovic, O.V., Kumar, V., Moe, K.S., Wang, W., Zaitsev, A.M. | Comparison of HPHT and LPHT annealing of Ib synthetic diamond. | Diamond & Related Materials, doi.1016/j.diamond.2018.11.018 30p. | Russia | synthetics |
| Abstract: Defect transformations in type Ib synthetic diamond annealed at a temperature of 1870?°C under stabilizing pressure (HPHT annealing) and in hydrogen atmosphere at normal pressure (LPHT annealing) are compared. Spectroscopic data obtained on the samples before and after annealing prove that the processes of nitrogen aggregation and formation of nitrogen?nickel complexes are similar in both cases. Essential differences between HPHT and LPHT annealing are stronger graphitization at macroscopic imperfections and enhanced lattice distortions around point defects in the latter case. The lattice distortion around point defects is revealed as a considerable broadening of zero-phonon lines of “soft” (vacancy-related) optical centers. It was found that LPHT annealing may enhance overall intensity of luminescence of HPHT-grown synthetic diamonds. |
DM201812-3001 2018 | London Mining Journal | Synthetic diamonds' price differential continues to rise. Comment by Zimnisky ( no resale value) | londonmining journal.com, Nov. 27, 1/4p. | Global | News item - synthetics |
DM201812-3041 2018 | Rough-polished | If real gems are repaced by artificial stones, it is not the difference in value that sellers may cheat you out, but the very idea that you are able to obtain along with a jewelery piece made from a genuine stone. Elena Titova ( Russian Decorative Art Mu | rough-diamond.com, Nov. 13, 1p. | Russia | News item - synthetics |
DM201812-3045 2018 | Rough-polished | Diamond Foundry creates one of a kind ring completely made of diamond worth $ 250,000. | rough-diamond.com, Nov. 16, 1/4p. | Global | News item - Diamond Foundry |
DM201812-3070 2018 | The Israeli Diamond Industry | Lab-grown diamonds could recharge drones in mid-flight. | en.israelidiamond .co.il, Nov. 21, 1/2p. | Global | News item - synthetics |
DS201812-2891 2018 | The Israeli Diamond Industry | Lab-grown diamonds could recharge drones in mid flight. LakeDiamond company. | en.israelidiamond.co.il, Nov. 21, 1/2p. | Europe, Switzerland | synthetics |
| Abstract: LakeDiamond, a Swiss-based company that grows ultra pure diamonds and transforms them for high-tech applications, is currently developing a system that could revolutionize the use of civilian drones. According to a story in phys.org, the Swiss company is testing the use of small lab-grown diamond in recharging drones mid-flight through a laser beam. The laser beam, guided by a tracking system, can recharge photovoltaic cells on the drones’ surface. Recently, LakeDiamond’s project was included among ten projects supported for two years by the Swiss Space Office. Currently, batteries of drones - especially propeller drones - can keep the drones in flight for up to 15 minutes at a time. Using a high-power laser that cannot damage human skin or eyes, LakeDiamond’s technology is built around lab-grown diamonds used as as the optical component on a booster, which is also composed of reflective material and a small metal plate to absorb the heat. According to the pice, “the diamonds are able to transfer heat to a small metal plate that dissipates it, while at the same time reflecting light in such a way as to create a laser beam”. The new diamond-based system could have other potential applications, such as charging and transmitting data to satellites. Although the future for LakeDiamond’s project looks bright, its remote recharging system works in the lab “but will require further development and refinement before it’s ready for field use”. The company also has to work out how to recharge large drones, and how to deal with some expected problems - such as the drone flying behind an obstacle and being cut off from its laser energy source. |
DM201812-3080 2018 | Zimnisky, P. | 2018: The year of the lab-created diamond. | paulzimnisky.com, Nov. 26, 4p. | Global | News item - synthetics |
DM201901-0109 2018 | Creamers Mining Weekly | Synthetic diamonds hogged media attention in 2018. | creamersmining weekly.com, Dec. 14, 1/4p. | Global | News item - synthetics |
DS201901-0025 2018 | Deljanin, B., Chapman, J. | Steps in screening and ID of laboratory-grown diamonds with synthetic diamond ID kit. | Gems & Gemology, Sixth International Gemological Symposium Vol. 54, 3, 1p. Abstract p. 305-6. | Global | synthetics |
| Abstract: Laboratory-grown diamonds are created using either high-pressure, high-temperature (HPHT) or chemical vapor deposition (CVD). With the influx of manmade diamonds on the market over the past few years, instrument producers and labs have launched screening and detection instruments to help dealers and jewelers spot HPHTor CVD-grown specimens. Most standard instruments are inaccurate testers or just type I and type II screening devices that do not give a definite answer about diamond genesis. Over the last four annual Mediterranean Gemmological and Jewellery Conferences and more than 30 workshops given in 17 countries, we have assembled a portable new Synthetic Diamond Identification Kit. The kit comprises two portable instruments and two booklets: 1) A PL inspector (mini UV lamp with magnifier) to inspect laboratory-grown, treated, and natural diamonds using long- and short-wave fluorescence and phosphorescence 2) A 2017 handbook with images and explanation of longand short-wave reactions of diamonds of all types 3) A mini foldable polariscope with portable light to separate natural diamonds using characteristic birefringence patterns from HPHT and CVD diamonds 4) A 2010 handbook with images and explanations of crosspolarized filter reactions of diamonds of all types The combination of this kit with professional training could identify all HPHT-grown diamonds and most CVD-grown diamonds on the market, loose or mounted. Also available are melee and jewelry inspectors consisting of larger UV lamps with magnifiers designed for identification of small loose or mounted diamonds. Different diamond types and subtypes can exhibit different birefringence under cross-polarized filters. A clear majority of natural diamonds exhibit some degree of internal strain, with type II natural diamonds showing a weak “tatami” pattern. HPHTgrown diamonds are free of such strain, and CVD-grown diamonds show mostly coarse columnar patterns. Most natural diamonds have a strong reaction to long-wave UV; this reaction is usually weaker (mostly blue) at shorter wavelengths. Laboratory-grown diamonds generally exhibit more intense fluorescence with short-wave UV compared to long-wave UV, with a chalky coloring tinged with green or yellow. Most HPHT-grown diamonds also phosphoresce. If a diamond is free of inclusions, fluorescence is a reliable screening test to flag suspicious stones that should be further checked under cross-polarized filters (figure 1). In the case of some rare near-colorless clean CVD-grown diamonds that do not show fluorescence or have a birefringence pattern that is coarse but resembling tatami in type IIa and weak patterns in natural Ia diamonds, additional tests using advanced spectroscopy and strong short-wave UV light to observe growth patterns are needed to confirm diamond genesis. |
DM201901-0114 2018 | Diamonds.net | Lightbox to launch rings and bracelets. | diamonds.net, Dec. 4, 1/4p. | Global | News item - Lightbox |
DM201901-0116 2018 | Diamonds.net | Lab grown production rising 15% per year 17 mln carats annually | diamonds.net, Dec. 6, 1/4p. | Global | News item - synthetics |
DM201901-0119 2018 | Diamonds.net | Diamonds and lies expose the real fake. Insight report | diamonds.net, Dec. 6, 2p. | Global | News item - synthetics |
DM201901-0123 2018 | Diamonds.net | De Beers Lightbox chief reveals 2019 plans. | diamonds.net, Dec. 27, 1/4p. | Global | News item - Lightbox |
DS201901-0027 2018 | Diggle, P.L., D'Haenens-Johannsson, U.F.S., Wang, W., Newton, M.E. | Diamond and diffraction limit: optical characterization of synthetic diamond. | Gems & Gemology, Sixth International Gemological Symposium Vol. 54, 3, 1p. Abstract p. 265. | Global | DiamondView |
| Abstract: Diamond, known for its splendor in exquisite jewelry, has been synthesized since the 1950s. In the last six decades, the perfection of laboratory-grown single-crystal diamond has vastly improved through the research and development of two main synthesis techniques. One replicates Earth’s natural process, where the diamond is grown in the laboratory under conditions of diamond stability at high temperature and high pressure (HPHT). The other technique relies on the dissociation of methane (or other carbon-containing source gas) and hydrogen and the subsequent deposition of diamond at low pressures from the gaseous phase in a process known as chemical vapor deposition (CVD). In the latter case, diamond is not the stable form of carbon, but the kinetics in the CVD process are such that diamond wins out. Large gem-quality synthetic diamonds are now possible, and a 6 ct CVD (2018) and a 15.32 ct HPHT (2018) have been reported. It is of course possible to differentiate laboratory-grown from natural diamond based on how extended and point defects are incorporated into the crystal. Furthermore, treated diamond can be identified utilizing knowledge of how defects are produced and how they migrate and aggregate in both natural and synthetic diamond samples. Room-temperature confocal photoluminescence microscopy can be used to image the emission of light from defects in diamond with a spatial resolution limited only by the diffraction limit; a lateral spatial resolution approaching 300 nm is routinely achieved (figure 1). It is possible with this tool to identify point defects with concentrations less than 1 part per trillion (1011 cm–3). This talk will outline the experimental setup, how this tool has been used to identify the decoration of dislocations with point defects in CVD lab-grown diamond, and how different mechanisms for defect incorporation operate at growth sector boundaries in HPHT synthetic diamond. |
DS201901-0030 2018 | Eaton-Magana, S. | Summary of CVD lab-grown diamonds seen at the GIA laboratory. | Gems & Gemology, Sixth International Gemological Symposium Vol. 54, 3, 1p. Abstract p. 269-270.. | United States | synthetics |
| Abstract: While chemical vapor deposition (CVD) diamond growth technology has progressed significantly in recent years, with improvements in crystal size and quality, the use of these goods in the jewelry trade is still limited. Not all CVD-grown gem diamonds are submitted to GIA for grading reports, and they only account for about 0.01% of GIA’s annual diamond intake (both D–Z equivalents and fancy color; Eaton-Magaña and Shigley, 2016). The CVD process involves diamond growth at moderate temperatures (700–1300°C) but very low pressures of less than 1 atmosphere in a vacuum chamber (e.g., Angus and Hayman, 1988; Nad et al., 2015). This presentation summarizes the quality factors and other characteristics of the CVD-grown material submitted to GIA (e.g., figure 1) and discusses new research and products. Today the CVD process is used to produce high-color (as well as fancy-color) and high-clarity type II diamonds up to several carats in size. The majority of the CVD material seen at GIA consists of near-colorless (G–N equivalent) with colorless (D–F equivalent) and various “pink” hues. Additionally, CVD material is constantly setting new size milestones, with the announcement of an approximately 6 ct round brilliant earlier this year (Davis, 2018). However, the attainable sizes among CVD products are dwarfed by those from the HPHT process, with 15.32 ct as the current record for a faceted gem (Ardon and Eaton-Magaña, 2018). One particular challenge for gemologists (albeit very rarely encountered) comes from the lab-grown/natural hybrids (figure 2) that have been submitted to and documented by gemological laboratories (e.g., Moe et al., 2017; Tang et al., 2018). In these specimens, the grower places a natural diamond into the CVD reactor as the seed plate, with both components retained in the faceted gem. If the manufacturer is using a colorless natural type Ia diamond as a seed plate for near-colorless CVD growth, the hybrid cannot undergo any post-growth HPHT treatment, as this would radically alter the natural seed by turning the natural diamond yellow. If the manufacturer is creating a CVD overgrowth layer on a faceted natural diamond, the intent is to either add weight to a diamond that may be near a weight boundary or to achieve a color change, typically to blue. These hybrid products also make it more difficult to infer a diamond’s history based solely on its diamond type. The CVD process has also created some unique gems that have not been duplicated among natural, treated, or HPHT-grown diamonds. These include CVD-grown diamonds with a high concentration of silicon impurities, which create a pink to blue color shift. In those samples, a temporary effect was activated by UV exposure, which precipitated a charge transfer between negative and neutral silicon-vacancy centers (D’Haenens-Johansson et al., 2015). Also recently seen are type IIb CVD goods. Some that were submitted by clients had a low boron concentration (3 ppb, with G-equivalent color and 1.05 carat weight). Meanwhile, some research samples produced by a manufacturer in China and fashioned as flat plates had dark bluish coloration and very high boron concentration (2500 ppb and higher). Also among that suite of flat-plate CVD samples was one with a black color caused by extremely high amounts of nitrogen-vacancy centers. Although new CVD products are continually being manufactured and introduced to the trade, the laboratory-grown diamonds examined to date by GIA can be readily identified. |
DS201901-0033 2018 | Fisher, D. | Addressing the challenges of detecting synthetic diamonds. | Gems & Gemology, Sixth International Gemological Symposium Vol. 54, 3, Fall 1p. Abstract p. 263-4 | Global | synthetics |
| Abstract: The dream of growing synthetic diamonds existed for many centuries before it was achieved in the 1950s. The development of techniques to identify synthetic diamonds and enable their reliable separation from natural diamonds has not had the luxury of centuries to work with. Since the early reports on the characteristics of laboratory-grown stones, scientists have been working steadily to establish and improve the means of detection. For many years the De Beers Group has been developing equipment for rapidly screening and testing for potential synthetic and treated diamonds as part of a strategy aimed at maintaining consumer confidence in natural untreated diamonds. This work has been underpinned by extensive research into defects in natural and synthetic diamond, either conducted within De Beers’ own facilities or through financial and practical support of research in external institutions. Key to any detection technique for synthetic diamonds is a fundamental understanding of the differences between them and natural diamonds. This could take the form of differences in the atomic impurity centers or differences in the spatial distributions of these centers brought about by very significant distinctions in the growth environments. The former was used in the development of the Dia - mondSure instrument that, among other things, detects variance differences in the absorption spectra due to the presence or absence of the N3 feature. This absorption is from a nitrogen-related defect that is usually only produced in nitrogen-containing diamonds by extended periods at relatively high temperatures—that is, conditions generally experienced by natural diamonds. Growth-related differences in impurity distributions can be very accurately imaged using the DiamondView instrument. Short-wave ultraviolet (UV) light is used to excite luminescence from a very thin layer of diamond near the surface to give images free from the blurring encountered with more common longer-wavelength excitation sources. DiamondView has, since its launch, provided the benchmark for the detection of synthetic diamonds. A number of approaches involving absorption features have been developed, including the use of almost complete absorption in the ultraviolet region of the spectrum to indicate that a diamond is not synthetic. The UV absorption is produced by the A center (two adjacent nitrogen atoms) and is rarely encountered in as- grown synthetic diamonds. The main form of nitrogen in synthetic diamonds is a single substitutional nitrogen atom that absorbs in both the ultraviolet and visible regions to produce yellow color. The combination of UV absorption and no strong yellow color is therefore restricted to natural diamond. However, treatment of nitrogen-containing synthetic diamonds is capable of generating A centers, but generally does not produce a colorless stone. This effect accounts for the careful color ranges often applied to instruments relying on UV absorption for screening. This also highlights one of the limitations of absorption spectroscopy: When smaller stones are tested, the amount of absorption decreases and the technique becomes less reliable. In recent years we have seen a shift to smaller sizes (below 0.01 ct) in the synthetic diamonds being offered for sale to the jewelry market, and screening techniques have had to evolve to address this situation and the limitations of absorption-based approaches. Testing melee-sized diamonds, as well as introducing technical challenges around the measurement technique, has also led to the introduction of greater automation. In 2014 the De Beers Group introduced the first automated melee screening instrument (AMS1), which combined the measurement technique from Dia - mondSure with automated feeding and dispensing of stones in the range of 0.20 to 0.01 ct. While this instrument was well received and effectively addressed concerns around synthetic melee-sized stones in the trade at the time, there soon came calls for improvements— a faster instrument capable of measuring smaller stones, no restrictions on cut, and a lower referral rate for natural diamonds. These requirements proved impossible to meet with the limitations imposed by absorption measurements, and a new technique based on time-resolved spectroscopy was developed. This resulted in the AMS2 instrument, launched in March 2017. The AMS2 processes stones at a speed of one stone per second, 10 times faster than the AMS1. It measures round brilliants down to 0.003 ct (0.9 mm dia - meter) and can be used on other cuts for stones of 0.01 ct and above. The measurement technique itself has been incorporated into the SYNTHdetect (figure 1, left), an instrument launched in September 2017 that allows manual observation of the time-resolved emission. Besides providing the same testing capability as AMS2 (figure 1, right) for loose stones, various holders allow testing of mounted stones in a wide range of configurations. The benefit of this approach is that stones tested loose using AMS2 will generate a broadly consistent result when mounted on SYNTHdetect. Changes in growth processes for synthetic diamonds have also led to the gradual introduction of new characteristics. High - pressure, high-temperature (HPHT) synthetics have tended to be fairly consistent in their growth-related luminescence patterns, while significant variations in the features associated with chemical vapor deposition (CVD) synthetics have been observed. These continue to be well documented and have led to the gradual evolution of the DiamondView instrument and the way in which it is used. Post-growth treatment of synthetic diamonds can be applied for a number of reasons: improvement in the color, modification of the atomic defects to make the stones look more like a natural diamond, and removal of a characteristic that could be used to identify a synthetic diamond. The motivation for the latter two treatments can only be described as fraudulent. The challenge in developing detection instruments and techniques is to ensure that they are as robust as possible in the face of such challenges. Treatment techniques will rarely have any effect on the growth patterns associated with synthetic diamonds, and it is therefore very difficult to treat synthetics in a way that would make them undetectable using the DiamondView. Screening instruments tend to be based on a single technique, and it is important that the approach adopted not be vulnerable to simpler forms of treatment. This has been of primary concern to the De Beers Group in the development of our own screening instruments. It has also been necessary in certain cases to withhold detailed information about detection techniques where disclosure of this would lead to undermining of the detection technique itself. The De Beers Group continues to invest heavily in growth and treatment research in order to develop the next generation of instruments and techniques that will assist the trade in maintaining detection capability to support consumer confidence. The Group is uniquely placed in the industry to address these challenges due to its collaboration with Element Six (world leaders in synthesis of diamond for industrial and technical applications) and its indepth knowledge of the properties of natural diamonds with known provenance from its own mines. |
DS201901-0043 2018 | Ke, J., Lu, T., Lan, Y., Song, Z., Tang, S., Zhang, J., Chen, H. | Recent developments in detection and gemology in China, particularly for Chinese synthetic diamonds. | Gems & Gemology, Sixth International Gemological Symposium Vol. 54, 3, 1p. Abstract p. 268. | China | synthetics |
| Abstract: China is the world’s largest producer of HPHT-grown industrial diamonds. Its 2016 production of about 20 billion carats accounted for 98% of the global supply. Since the beginning of 2015, meleesized colorless HPHT synthetic diamonds have been tested at the National Gemstone Testing Center’s (NGTC) Shenzhen and Beijing laboratories in parcels submitted by different clients, which means that colorless HPHT synthetic diamonds have entered the Chinese jewelry market and may be mistaken for natural diamonds. CVD synthesis technology has grown rapidly in recent years. Large colorless and colored (blue, pink) CVD-grown diamonds have been entering the market, and a few have been fraudulently sold as natural diamonds. China has independently developed gem-grade HPHT synthetic diamond production technology since 2002, and can grow gem-grade type Ib, IIa, and IIb and high-nitrogen-content synthetic diamonds in volume, depending on market needs. Gemgrade type Ib, IIa, and IIb HPHT synthetic diamonds have been grown using the temperature gradient method, under a cubic press at high pressure (e.g., 5.4 GPa) and high temperature (1300-1600°C). Driven by a specific temperature gradient, the carbon source from high-purity graphite (>99.9%) located at the high-temperature zone can diffuse into the seed crystals in the cubic press, resulting in the crystallization of synthetic diamonds. Chinese production of melee-sized colorless to near-colorless HPHT synthetic diamonds accounts for about 90% of the global output. Gem-grade type IIa and IIb CVD synthetic diamonds are grown using the microwave plasma chemical vapor deposition (MPCVD) and direct current (DC) arc plasma methods. Faceted colorless CVD diamonds can be grown in sizes up to 6 ct by at least two Chinese companies (table 1). After testing and analyzing thousands of natural and synthetic diamonds collected directly from the Chinese companies, NGTC independently developed the GV5000, PL5000, DS5000, and ADD6000 instruments for rapidly screening and identifying the diamonds based on the gemological characteristics obtained. Besides HPHT and CVD synthetic diamonds, a thickly layered hybrid diamond consisting of both natural and CVD material was identified at the NGTC Beijing laboratory (figure 1). The identification features and properties of regrown CVD synthetic diamonds using natural type Ia diamond crystals as seeds will be reported. The current status and features of colored stones examined at NGTC laboratories, including several cases studies, will be discussed. |
DS201901-0044 2018 | Kitawaki, H., Emori, K., Hisanaga, M., Yamamoto, M., Okano, M. | LPHT treated pink CVD synthetic diamond. | Gems & Gemology, Sixth International Gemological Symposium Vol. 54, 3, 1p. Abstract p. 267. | Global | synthetics |
| Abstract: Pink diamond is extremely popular among fancy-color diamonds, which has prompted numerous attempts to produce pink diamond artificially. Pink CVD synthetic diamonds appeared on the gem market around 2010. Their color was produced by a multistep process combining post-growth HPHT treatment to remove the brown hue and subsequent electron irradiation, followed by low-temperature annealing. Pink CVD synthetic diamonds treated only with low pressure and high temperature (LPHT), without additional post-growth irradiation, have also been reported but are rarely seen on the market. Recently, a loose pink stone (figure 1) was submitted to the Central Gem Laboratory in Tokyo for grading purposes. Our examination revealed that this 0.192 ct brilliant-cut marquise was a CVD synthetic diamond that had been LPHT treated. Visually, this diamond could not be distinguished from natural diamonds with similar color. However, three characteristics of CVD origin were detected: 1. C-H related absorption peaks between 3200 and 2800 cm-1, located with infrared spectroscopy 2. A luminescence peak at 737 nm, detected with photoluminescence (PL) spectroscopy 3. A trace of lamellar pattern seen in the DiamondView However, irradiation-related peaks such as at 1450 cm-1 (H1a), 741.1 nm (GR1), 594.3 nm, or 393.5 nm (ND1) that are seen in the pink CVD diamonds treated with common multi-step processes were not detected. The presence of four peaks at 3123, 2901, 2870, and 2812 cm-1 between 3200 and 2800 cm-1 suggests this stone was LPHT treated; the following observations indicate that it was not HPHT treated: 1) The 3123 cm-1 peak presumably derived from NVH0 disappears after a normal HPHT treatment. 2) The 2901, 2870, and 2812 cm-1 peaks are known to shift toward higher wavenumbers as the annealing temperature rises. Our own HPHT treatment experiments on CVDgrown diamonds proved that the 2902 and 2871 cm-1 peaks detected after 1600°C annealing shifted to 2907 and 2873 cm-1 after 2300°C annealing. The peak shift of 2901, 2870, and 2812 cm-1 is also related to the pressure during the annealing, as these peaks shifted to 2902, 2871, and 2819 cm-1 at the higher pressure of 7 GPa compared to 2900, 2868, and 2813 cm-1 at the ambient pressure under the same annealing temperature of 1600°C. 3) Absorption peaks at 7917 and 7804 cm-1 in the infrared region and at 667 and 684 nm in the visible range were also detected, which coincide with the features seen in LPHTtreated stones. From the combination of the intensity ratios of optical centers such as H3 and NV centers that were detected with PL measurement, this sample is presumed to have been treated with LPHT annealing at about 1500- 1700°C as a post-growth process. In recent years, CVD synthetic diamonds have been produced in a wider range of colors due to progress in the crystal growth techniques and post-growth treatments. Although HPHT treatment has been employed mainly to improve the color in a diamond, LPHT annealing may become widespread as the technique is further developed. Gemologists need to have deep knowledge about the optical defects in such LPHT-treated specimens. |
DM201901-0139 2018 | London Mining Journal | March survey of prices found the discount of lab created, gem quality diamonds relative to natural diamonds had nearly doubled in 12 months. Zimnisky quoted. | londonmining journal.com, Dec. 17, 1/4p. | Global | News item - synthetics |
DS201901-0052 2018 | Palyanov, Y.N. | The many facets of diamond crystals. | Crystals MDPI, Vol. 8, 2, 9p. Doi.org/10. 3390/cryst8020072 | Russia | synthetics |
| Abstract: This special issue is intended to serve as a multidisciplinary forum covering broad aspects of the science, technology, and application of synthetic and natural diamonds. This special issue contains 12 papers, which highlight recent investigations and developments in diamond research related to the diverse problems of natural diamond genesis, diamond synthesis and growth using CVD and HPHT techniques, and the use of diamond in both traditional applications, such as mechanical machining of materials, and the new recently emerged areas, such as quantum technologies. The results presented in the contributions collected in this special issue clearly demonstrate that diamond occupies a very special place in modern science and technology. After decades of research, this structurally very simple material still poses many intriguing scientific questions and technological challenges. It seems undoubted that diamond will remain the center of attraction for many researchers for many years to come. |
DM201901-0165 2018 | Reuters | Lab grown diamonds slide as De Beers fights back. | reuters.com, Dec. 20, 1/4p. | Global | News item - synthetics |
DM201901-0189 2018 | Rough-polished | Consumer interest in lab-grown diamonds grows - report. | Rough-polished, Dec. 12, 1/4p. | Global | News item - synthetics |
DM201901-0206 2018 | Rough-polished | One hundred carat barrier in growing single crystal diamonds is history. | Rough-polished, Dec. 27, 1p. | Global | News item - synthetics |
DS201901-0094 2018 | Zaitsev, A.M., Moe, K.S., Wang, W. | Nitrogen in CVD-grown diamond. | Gems & Gemology, Sixth International Gemological Symposium Vol. 54, 3, 1p. Abstract p. 304-5. | Global | synthetics |
| Abstract: In diamond grown by the CVD method, nitrogen behaves differently than it does in natural and HPHT-grown diamond. The most striking peculiarities are low efficiency of doping, formation of unique optical centers over a wide spectral range from the ultraviolet (UV) to the IR regions, and formation of unusual defects related to aggregated nitrogen. In order to gain a better insight into this problem, several nitrogen-doped specimens grown in GIA’s CVD diamond lab and a few commercial yellow CVD-grown diamonds have been studied in their as-grown (asreceived) state and after electron irradiation and annealing at temperatures up to 1900°C (low-pressure, high-temperature treatment). We found that the brightest pink color of electron-irradiated nitrogen-doped CVD-grown diamond is produced by the NV– center after annealing at temperatures of about 1000°C. Annealing at temperatures over 1600°C destroys the irradiation-induced pink color (figure 1). The most prominent optical centers in the IR spectral region (figure 2, left) produced absorptions at 2828, 2874, 2906, 2949, 3031, 3107, 3123, and 3310 cm–1 (latter two not shown). These are ascribed to nitrogen-hydrogen complexes. Two characteristic absorption features at 1293 and 1341 cm–1 (figure 2, right) are unique to CVD diamond. They are tentatively ascribed to a modified form of nitrogen A-aggregates. In the visible and NIR spectral ranges, characteristic nitrogenrelated centers have zero-phonon lines (ZPLs) at 457, 462, 489, 498, 647, 722.5, 852.5, 865.5, 868.5, 908, 921.5, and 924.5 nm. The 489 nm feature is a major color center of electron-irradiated, nitrogen-doped CVD-grown diamond. This center, together with the GR1 center, is responsible for the green color in this material. An assumption is made that N atoms may form clusters in highly nitrogen-doped CVD-grown diamonds. These clusters may result in broad-band luminescence at wavelengths of 360, 390, 535, and 720 nm and a strong broadening of the ZPLs of many optical centers |
DM201902-0341 2019 | Bates, R. | 4 new questions for the lab-grown market - treatment disclosure, Patriot Act ( AML), location/made/sourcing. | jck.com, Jan. 25, 3p. | Global | News item - synthetics |
DM201902-0368 2019 | Diamonds.net | Flemish Gov't backs industrial-synthetics factory. Heyaru Engineering. | diamonds.net, Jan. 13, 1/4p. | Europe, Belgium | News item - synthetics |
DM201902-0373 2019 | Diamonds.net | Lab grown diamonds will survive BIG Diamonds attempt to kill them, start up says. | diamonds.net, Jan. 14, 1p. | Global | News item - synthetics |
DM201902-0375 2019 | Diamonds.net | Synthetics threat will grow, says ABN Amro. | diamonds.net, Jan. 17, 1/4p. | Global | News item - synthetics |
DM201902-0382 2019 | Financial Times | Former Dominion chief launches synthetic diamond venture … Evans …. | financialtimes.com, Jan. 13, 1/2p. | United States | News item - synthetics |
DM201902-0387 2019 | Idex Online | The assets of the lab grown diamond maker Scio Diamond are being bought by a Nevada company called Adamas One Corp. | idexonline.com, Jan 4, 1/2p. | United States, Nevada | News item - Scio |
DM201902-0408 2019 | Rapaport | Diamond Foundry is increasing its production more than tenfold and raising wholesale prices 15%, as it predicts an uptick in demand for lab-grown diamonds. | rapaport.com, Jan. 9, 1/4p. | Global | News item - synthetics |
DM201902-0411 2018 | Rough-polished | New diamond technology produced 103.5 ct single crystal type Ib | rough-polished.com, Dec. 30, 1/4p. | Global | News item - synthetics |
DM201902-0420 2019 | Rough-polished | Russia doesn't want synthetics to be passed off as natural diamonds - Russia's Ministry of Finance | rough-polished.com, Jan. 11, 1/4p. | Russia | News item - synthetics |
DM201902-0438 2019 | Rough-polished | North Carolina State University managed to grow diamond fibers by exposing carbon fibers or nanotubes to the pulsed laser annealing (PLA) method. News.ncsu.edu | rough-polished.com, Jan. 25, 1/4p. | United States, North Carolina | News item - synthetics |
DS201902-0325 2018 | Su, L-X., Zhao, C-X., Lou, Q., Chun-Yao, F., Li, Z., Shen, C-L., Zang, J-H., Jia, X-P., Shan, C-X. | Efficient phosphorescence from synthetic diamonds. | Carbon, Vol. 130, 1, pp. 384-389. | Global | synthetics |
| Abstract: Synthetic diamonds have inspired much interest for their unique photophysical properties and versatile potential applications, but their phosphorescent phenomenon and mechanism have been paid much less attention. Here, phosphorescent diamonds with a lifetime of 5.4?s were synthesized by high-pressure and high-temperature method, and the diamonds exhibit an emission band at around 468?nm under the excitation wavelength of 230?nm. The quantum yield of the phosphorescent diamonds is about 4.7% at ambient temperature and atmosphere, which is the first report on the quantum yield of diamonds. The unique phosphorescence emission can be attributed to the radiative recombination from iron related donors and boron related acceptors. |
DM201902-0455 2019 | The Israeli Diamond Company | ABN Amro reports on industry. Lab-grown diamonds | en.israelidiamond.co.il, Jan. 19, 1p. | Global | News item - synthetics |
DM201903-0554 2019 | Allafrica | The mine of the future has arrived… The Finsch diamond adopted Sandvik designed automated haulage in 2005. | moneyweb.co.za, Feb 6, 1/4p. | Africa, South Africa | News item - Sandvik |
DM201903-0577 2019 | Diamonds.net | Two white lab grown diamonds from De Beers' Lightbox have G colour and VS clarity ( GIA). | diamonds.net, Feb. 7, 1/4p. | Global | News item - Lightbox |
DM201903-0580 2019 | Diamonds.net | Gubelin testing nano-tracking for diamonds. Microscopic labels | diamonds.net, Feb. 13, 1/4p. | Global | News item - nanodiamond |
DM201903-0581 2019 | Diamonds.net | Helzberg Diamonds launches its own Light Heart brand. | diamonds.net, Feb. 13, 1/4p. | United States | News item - synthetics |
DM201903-0595 2019 | JCK | Scio tried to strike deal with diamond companies…. Before selling assets to Adamas One. | jck.com, Feb. 13, 1/4p. | United States, South Carolina | News item - Scio |
DM201903-0597 2019 | Knowledge | Still a girl's best friend: how ethical diamond are changing. Greater transparency. | Knowledge@Wharton, Feb. 9, 1/4p. | Global | News item - synthetics |
DM201903-0607 2019 | Mining.com | Nanosized diamond used to create super strong aluminum allow ( marine transport use) | mining.com, Feb. 11, 1/2p. | United Kingdom, Russia | News item - nanodiamond |
DM201903-0617 2019 | Robinson, A. | Lab grown diamonds. | Idexmagazine, Vol. 30, 346, pp. 22-31. | Global | News item - synthetics |
DM201903-0638 2019 | Rough-polished | DDT creates an entire lab-grown diamond ring. Dutch Diamond Technologies | rough-polished.com, Feb. 8, 1/4p. | Europe, Belgium | News item - DDT |
DM201903-0642 2019 | Rough-polished | Mouawad creates the biggest fancy yellow diamond. | rough-polished.com, Feb. 11, 1/4p. | Europe, Switzerland | News item - synthetics |
DM201903-0680 2019 | Zimnisky, P. | Made-in-China diamonds ready to rock global market. | rt.com/business/ 450869-china- diamonds-global-market, Feb. 6, 1p. | China | News item - synthetics |
DM201904-0814 2019 | AsiaOne | Are millennials abandoning diamonds? Jewellers | asiaone.com, Mar. 12, 1/4p. | Global | News item - synthetics |
DM201904-0849 2019 | Diamonds.net | HRD makes key changes to lab-grown reports. | diamonds.net, Mar. 7, 1/4p. | Europe, Belgium | News item - synthetics |
DM201904-0866 2019 | JCK News | Lightbox adds more 1 carat solitaires - but with drill holes. | jckonline.com, Mar. 28, 1/4p. | Global | News item - Lightbox |
DM201904-0868 2019 | jckonline | How should lab-grown diamonds be graded? | jckonline.com, Mar. 8, 4p. | Global | News item - synthetics |
DM201904-0874 2019 | Mining.com | Firm develops technique to detect rough and polished lab-grown yellow diamonds. Diamond Services | mining.com, Mar. 26, 1p. | Global | News item - Diamond Services |
DM201904-0876 2019 | Miningmx | De Beers makes early in-roads after Lightbox launch sees 60% retreat in synthetic pricing. | miningmx.com, Mar. 7, 1/4p. | Global | News item - Lightbox |
DM201904-0913 2019 | Rough-polished | HRD provides lab grown diamond grading reports. | rough-polished, Mar. 11, 1/4p. | Global | News item - synthetics |
DM201904-0937 2019 | Rough-polished | Demand for lab-grown diamonds rises while prices fall. GIA | rough-polished, Mar. 21, 1/4p. | Global | News item - synthetics |
DM201904-0942 2019 | Rough-polished | Synthetic diamond coating is a new challenge for gemmologists. | rough-polished, Mar. 22, 1/4p. | Global | News item - synthetics |
DM201904-0952 2019 | Rough-polished | Diamond Services introduces new lab-grown diamond identification system. | rough-polished, Mar. 27, 1/4p. | Global | News item - synthetics |
DM201905-1094 2019 | Almor, Y. | Are LGDs the cause of lower melee prices? | idexonline.com, Apr. 5, 1/4p. | Global | News item - synthetics |
DM201905-1095 2019 | Bates, R. | Just how eco-friendly are lab-created diamonds? | jckonline.com, Mar. 29, 1p. | Global | News item - synthetics |
DM201905-1096 2019 | Bates, R. | GIA has opted to change its reports for lab-grown diamonds by jettisoning the word synthetic. Scale to be used G-through J | jckonline.com, Apr. 1, 1p. | Global | News item - synthetics |
DM201905-1098 2019 | Bates, R. | FTC's warning letters ripple through lab grown industry. | jckonline.com, Apr. 15, 3p. | Global | News item - synthetics |
DM201905-1146 2019 | JCK | FTC warns lab-grown diamond companies about marketing. | jckonline.com, Apr. 2, 1/2p. | Global | News item - synthetics |
DM201905-1148 2019 | JCK | Diamond shavings: woes of the diamond industry. | jckonline.com, Apr. 5, 1/4p. | Global | News item - Lightbox |
DM201905-1159 2019 | Rapaport | GIA aligns lab-grown reports with FTC standards. | gia.org, Apr. 1, 1/4p | Global | News item - synthetics |
DM201905-1168 2019 | Rough-polished | Advertisements for lab-grown diamonds must be crystal clear warns FTC. | rough-polished.com, Apr. 3, 1/4p. | Global | News item - synthetics |
DM201905-1185 2019 | Rough-polished | Russia's Ministry of Finance proposes to sell LGD jewellery in separate windows. | rough-polished.com, Apr. 12, 1/4p. | Russia | News item - synthetics |
DM201905-1220 2019 | Rough-polished | The technology of growing single-crystal diamonds has now become industrial in nature. | rough-polished.com, Apr. 29, 1p. | Global, India | News item - synthetics |
DM201906-1378 2019 | Creamers Mining Weekly | Mine versus lab: how green is your diamond? | creamersmining weekly.com, May 2, 1/4p. | Global | News item - synthetics |
DM201906-1404 2019 | Diamonds.net | GIA spots natural-synthetic hybrid diamond. Layer over natural diamond. | diamonds.net, May 21, 1/4p. | Global | News item - synthetics |
DM201906-1408 2019 | Diamonds.net | Undisclosed green synthetics raise GIA eyebrows. | diamonds.net, May 26, 1/4p. | United States | News item - synthetics |
DM201906-1419 2019 | International Mining | Element Six synthetic diamond will help hard rock cutting achieve. | international mining.com, May 13, 1/4p. | Global | News item - Element Six |
DS201906-1310 2019 | Lab notes | CVD layer grown on natural diamond | Gems & Gemology, Vol. 55, 1, pp. 97-99. | Global | synthetic |
| Abstract: A 0.64 ct Fancy grayish greenish blue cushion modified brilliant (figure 1) was recently found to be a composite of synthetically grown and natural diamond. During testing, the infrared spectrum showed both strong absorption of nitrogen and the absorption of uncompensated boron, features characteristic of type Ia and type IIb diamonds, respectively (figure 2). The UV-Vis-NIR spectrum showed “cape” peaks, which are nitrogen-related defects, but also a sloping absorption into the red portion of the spectrum caused by uncompensated boron. It is very unusual for boron- and nitrogen-related defects to be seen together in natural diamonds, though an example has been seen before (Spring 2009 Lab Notes, pp. 55-57). Mixed-type diamonds always call for additional scrutiny...(no abstract, full article) |
DM201906-1422 2019 | London Mining Journal | Sandvik unveils 3D printed diamond….. Dark colour for bonding | londonmining journal.com, May 23, 1/4p. | Global | News item - Sandvik |
DM201906-1427 2019 | Miningmx | Study finds laboratory diamonds more carbon intensive than mined…. | reuters.com, May 3, 1p. | Global | News item - synthetics |
DM201906-1428 2019 | Miningmx | Man made or laboratory diamonds had a larger carbon footprint than naturally mined diamonds. Reuter study. | miningmx.com, May 6, 1/4p. | Global | News item - synthetics |
DM201906-1437 2019 | Rapaport | Martin Rapaport: Synthetic diamonds are a fundamental threat to the natural diamond industry….. | Diamonds.net, May 23, 4p. | Global | News item - synthetics |
DM201906-1448 2019 | Rough-polished | First ever rough LGD tender to be held on DMCC's DDE. | rough-polished.com, May 8, 1/4p. | United Arab Emirates, Dubai | News item - synthetics |
DM201906-1469 2019 | Rough-polished | The Lab Grown Diamond Council ( LGDC) trade organization has retained an internationally recognized third party certifier and standards developer, SCS Global Services to create third party certfication. | rough-polished.com, May 23, 1/4p. | Global | News item - LGDC |
DM201906-1475 2019 | Rough-polished | Synthetics to be marked with special code. | rough-polished.com, May 8, 1/4p. | Russia | News item - synthetics |
DM201906-1488 2019 | Zimnisky, P. | What we call man-made diamonds could ultimately determine their success. Chart with various names for synthetics included. | paulzimnisky.com, May 22, 3p. | Global | News item - synthetics |
DM201907-1630 2019 | Diamonds.net | Lab-grown ban splits opinion on facebook. | diamonds.net, May 30, 1/4p. | Global | News item - synthetics |
DM201907-1638 2019 | Diamonds.net | Lightbox - the synthetics king? | diamonds.net, June 5, 1/4p. | Global | News item - Lightbox |
DM201907-1646 2019 | GIA | Lightbox, a De Beers company has begun selling "white", pink and blue CVD | GIA.edu, May 29, 1/2p. | Global | News item - Lightbox |
DM201907-1674 2019 | Miningmx | Lucara's Eira Thomas applauds De Beers' Lightbox as 'positive development'. | miningmx.com, June 12, 1p. | Global | News item - Lightbox |
DM201907-1676 2019 | Rapaport | The natural diamond industry says "no" to synthetics. | Rapaport, June 5, 1/4p. | Global | News item - synthetics |
DM201907-1697 2019 | Rough-polished | Quantum diamonds found use in an untectectable navigation device. Lockheed Marton and Element Six | rough-polished.com, June 11, 1/4p. | Global | News item - Element Six |
DM201907-1718 2019 | Rough-polished | By 2030, every tenth diamond may be synthetic - media. | rough-polished.com, June 25, 1/4p. | Global | News item - synthetics |
DM201907-1719 2019 | Rough-polished | Lebish Polnauer comments that lab grown diamonds is probably the biggest scam this industry has ever seen. | rough-polished.com, June 25, 1p. | Global | News item - synthetics |
DM201907-1728 2019 | The Israeli Diamond Industry | Synthetic, LGD or man-made? How names affect consumers. Zimnisky comment | en.israelidiamond.co.il, June 11, 1/2p. | Global | News item - synthetics |
DM201907-1737 2019 | Zimnisky, P. | Diamond by any other name? | Diamonds in Canada, June pp. 8-10. | Global | News item - synthetics |
DM201908-1833 2019 | Asia One | China disrupting world's diamond sector, tapping sophisticated technology to produce cheap knock-offs ( has 56% of synthetic market). | asiaone.com, July 29, 1p. | China | News item - synthetics |
DM201908-1863 2019 | Diamonds.net | Indian differentiates synthetics imports. Classification code for lab-grown. | diamonds.net, July 15, 1/4p. | India | News item - synthetics |
DM201908-1887 2019 | JCK News | Lab-grown diamond companies receive investment. Cornes stake in Green Rocks and Isrough. | jcknews.com, July 16, 1/2p. | Europe, Israel, Asia, Japan | News item - synthetics |
DM201908-1924 2019 | Rough-polished | "Our goal is to bring clarity to the offering of Lab Grown diamonds". Asserts Chris Casey, President of Lab Grown Diamonds. | rough-polished.com, July 8, 2p. | Global | News item - synthetics |
DM201908-1927 2019 | Rough-polished | India introduces 8 digit HS code for synthetic rough diamonds. | rough-polished.com, July 9, 1/4p. | India | News from - synthetics |
DM201908-1930 2019 | Rough-polished | Synthetic diamonds under the guise of natural on Alibaba e-commerce site - BBC. | rough-polished.com, July 11, 1/4p. | China | News item - synthetics |
DM201908-1944 2019 | Rough-polished | There has been a strict policy in Israel against LGDs; have been forbidden in IDE trading floor for years. | rough-polished.com, July 22, 4p. | Europe, Israel | News item - synthetics |
DM201908-1955 2019 | Rough-polished | GSI opens its new testing laboratory in New York. | rough-polished.com, July 29, 1/4p. | United States, New York | News item - synthetics |
DM201908-1973 2019 | Times of India | DGFT issues separate HS code for lab-grown diamonds. | timesofindia.com, July 8, 1/p. | India | News item - synthetics |
DS201908-1823 2019 | Wang, W., Moses, T. | Current status of synthetic gem diamonds and their identification. | www.minsocam.org/ MSA/Centennial/ MSA_Centennial _Symposium.html The next 100 years of mineral science, June 20-21, p. 35. Abstract | Global | HPHT, CVD, synthetics |
| Abstract: Diamond growth technology has experienced rapid progress in the past 20 years. Gemquality diamonds can be produced with both HPHT (high-pressure and high-temperature) and CVD (chemical vapor deposition) technologies. While HPHT technology basically mimics the growth conditions of natural diamonds in the earth’s mantle, the CVD method actually grows diamond in graphite-stable thermodynamic conditions. Faceted gem diamonds, both colorless and fancy-colored, are commercially produced up to 20 carats, comparable to topquality natural diamonds. At the same time, millions of melee-size gem diamonds (0.005 carat and up) are produced for the gem trade. Post-growth treatments (mainly HPHT annealing and irradiation under a high-energy beam) can not only remove an undesirable brown color but also introduce many types of fancy colorations such as pink/red and blue. Millions of carats of synthetic gem diamonds are produced annually for the gem trade globally. It is very important for the jewelry industry to be able to effectively and accurately separate synthetic diamonds from natural. All diamonds have lattice defects, from ppm to ppb concentrations or even lower. Main defects include nitrogen, boron, vacancies, dislocations, and combinations of these. Natural diamonds and their synthetic counterparts are supposed to have different defect configurations, such as defect type, concentration, coexistence, and distribution within a single crystal. Sometimes this difference can be very minor. Artificial treatment could be applied to intentionally minimize the differences to reduce the possibility of identifying synthetics. Natural and synthetic diamonds have a fundamentally different growth habit. Natural diamonds are dominated by a {111} growth sector. HPHT synthetic diamonds normally have multiple growth sectors such as {111}, {100}, and {110}. CVD diamond typically grows in the {100} direction only, but the uneven growth rate creates striations. The ability to capture defects varies significantly among different growth sectors, which are considered the most reliable features in identification. In gem laboratories, a host of gemological and spectroscopic technologies have been developed to enable this separation. GIA’s laboratory can identify every single synthetic diamond produced. Details of the current status of synthetic gem diamonds and their identification will be reviewed in this presentation. |
DS201908-1823 2019 | Wang, W., Moses, T. | Current status of synthetic gem diamonds and their identification. | www.minsocam.org/ MSA/Centennial/ MSA_Centennial _Symposium.html The next 100 years of mineral science, June 20-21, p. 35. Abstract | Global | HPHT, CVD, synthetics |
| Abstract: Diamond growth technology has experienced rapid progress in the past 20 years. Gemquality diamonds can be produced with both HPHT (high-pressure and high-temperature) and CVD (chemical vapor deposition) technologies. While HPHT technology basically mimics the growth conditions of natural diamonds in the earth’s mantle, the CVD method actually grows diamond in graphite-stable thermodynamic conditions. Faceted gem diamonds, both colorless and fancy-colored, are commercially produced up to 20 carats, comparable to topquality natural diamonds. At the same time, millions of melee-size gem diamonds (0.005 carat and up) are produced for the gem trade. Post-growth treatments (mainly HPHT annealing and irradiation under a high-energy beam) can not only remove an undesirable brown color but also introduce many types of fancy colorations such as pink/red and blue. Millions of carats of synthetic gem diamonds are produced annually for the gem trade globally. It is very important for the jewelry industry to be able to effectively and accurately separate synthetic diamonds from natural. All diamonds have lattice defects, from ppm to ppb concentrations or even lower. Main defects include nitrogen, boron, vacancies, dislocations, and combinations of these. Natural diamonds and their synthetic counterparts are supposed to have different defect configurations, such as defect type, concentration, coexistence, and distribution within a single crystal. Sometimes this difference can be very minor. Artificial treatment could be applied to intentionally minimize the differences to reduce the possibility of identifying synthetics. Natural and synthetic diamonds have a fundamentally different growth habit. Natural diamonds are dominated by a {111} growth sector. HPHT synthetic diamonds normally have multiple growth sectors such as {111}, {100}, and {110}. CVD diamond typically grows in the {100} direction only, but the uneven growth rate creates striations. The ability to capture defects varies significantly among different growth sectors, which are considered the most reliable features in identification. In gem laboratories, a host of gemological and spectroscopic technologies have been developed to enable this separation. GIA’s laboratory can identify every single synthetic diamond produced. Details of the current status of synthetic gem diamonds and their identification will be reviewed in this presentation. |
DM201909-2193 2019 | Rough-polished | Lab-grown diamond jewellery exports from India to capture 2 % of US market. | rough-polished.com, Aug. 14, 1/4p. | India, United States | News item - synthetics |
DM201910-2360 2019 | Economic Times | Lab-grown diamonds can revive India's struggling diamond industry. | economictimes.com, Sept. 26, 1/4p. | India | News item - synthetics |
DM201910-2375 2019 | Industry Journal | Global HPHT diamond market 2019: Global revenue by suppliers Sumitomo Electric, Hebei PlasmaDia, Element Six. | Theindustryjournal.com, Sept. 16, 1/4p. | Global | News item - synthetics |
DM201910-2396 2019 | Republic of Mining | Silicon Valley wants to put diamond mines out of business - by growing gems in a lab using solar power. | telegraph.co.uk, Sept. 5, 1p. | United States, California | News item - synthetics |
DM201910-2410 2019 | Rough-polished | India's lab-grown polished diamond export increases by 94%. | rough-polished.com, Sept. 3, 1/4p. | India | News item - synthetics |
DM201910-2460 2019 | The Israeli Diamond Industry | WFDB President talks LGDs and credit.. Dwindling bank credit and provides solutions. | [email protected], Sept. 4, 1/2p. | Global | News item - synthetics |
DM201911-2629 2019 | Idex Online | Is the BDB finally allowing lab grown diamond trading? | idexonline.com, Oct. 17, 1/4p. | India | News item - synthetics |
DM201911-2636 2019 | JCK News | Is there a resale market for lab-grown diamonds. | jckonline.com, Oct. 25, 1/2p. | Global | News item - synthetics |
DM201911-2657 2019 | Rapaport | Lightbox to debut at Bloomingdale's, Reeds. | rapaport, Oct. 17, 1/2p. | United States, New York | News item - Lightbox |
DM201911-2693 2019 | Rough-polished | China's young customers now take an interest in lab-grown diamonds. | rough-polished.com, Oct. 7, 1/4p. | China | News item - synthetics |
DM201911-2709 2019 | Rough-polished | Trutnev calls on Alrosa to enter the synthetic market. | rough-polished.com, Oct. 27, 1/4p. | Russia | News item - synthetics |
DM201912-2938 2019 | Rough-polished | De Beers providing its own clarity about natural and laboratory grown diamonds. | rough-polished.com, Nov. 21, 1/4p. | Global | News item - synthetics |
DM201912-2941 2019 | Rough-polished | A customs code for differentiating natural and synthetic diamonds is adopted by EU. | rough-polished.com, Nov. 20, 1/4p. | Europe | News item - synthetics |
DM202001-0085 2019 | Idex Online | Is the ostrich finally lifting its head out of the sand? Lab diamonds new technology. | idexonline.com, Dec. 12, 3p. | Global | News item - synthetics |
DM202001-0089 2019 | JCK News | Signet now selling lab-created diamonds at all U.S. Banners. | jackonline.com, Dec. 14, 1/4p. | United States | News item - Signet |
DM202001-0130 2019 | The Lane Report | Implentation of a pilot plant/demonstration facility to grow large diamonds ( Conn Centre) Da Vinci holdings | Kentucky Advanced Materials Manufacturing, Dec. 27, 1p. | United States, Kentucky | News item - KAMM |
DM202002-0232 2020 | Creamers Mining Weekly | Carnegie Institution seeks cut of rising lab grown diamond sales. | creamersminingweekly, Jan. 10, /4p. | United States | News item - synthetics |
DM202002-0242 2020 | Diamonds.net | Rough diamond sales slip as lab-grown industry sees growth. | diamonds.net, Jan. 8, 1/4p. | Global | News item - synthetics |
DM202002-0248 2020 | Diamonds.net | Lab-grown diamond jewelry brand backs 2020 Bafta awards. | diamonds.net, Jan. 16, 1/4p. | Global | News item - synthetics |
DM202002-0274 2019 | Rough-polished | Synthetic diamonds to be produced in the Moglino XEZ, Russia. | rough-polished, Dec. 30, 1/4p. | Russia | News item - synthetics |
DM202003-0376 2020 | BBCNews | The sparkling rise of lab-grown diamonds. | bbcnews.com, Feb. 9, 6p. | Global | News item - synthetics |
DM202003-0411 2020 | Diamonds.net | De Beers adds grading specs for Lightbox. | diamonds.net, Feb. 19, 1p. | Global | News item - Lightbox |
DM202003-0415 2020 | Global Newspaper 24 | Global synthetic diamond market growth drivers, opportunity and forecast 2026: Element Six, Sandvik Hyperion, ILJIN Diamond, Zhongnan Diamond. | globalnewspaper24.com, Feb. 20, 4p. | Global | News item - synthetics |
DM202003-0420 2020 | JCK | Lightbox to include more grading information with its diamonds. | jackonline.com, Feb. 17, 1/4p. | Global | News item - Lightbox |
DM202003-0421 2020 | London Mining Journal | Retail margins could be boosting man-made diamond sales. | londonmining journal.com, Feb. 19, 1/4p. | Global | News item - synthetics |
DM202003-0454 2020 | Rough-polished | IIa Technologies successfully invalidates Element Six synthetic diamond patent? | rough-polished.com, Feb. 10, 1/4p. | Global | News item - Element Six |
DM202003-0473 2020 | Times Square Chronicle | How is a lab diamond created. ( basic info) | timessquare chronicle.com, Feb. 4, 1/2p. | Global | News item - synthetics |
DS202004-0497 2020 | Ashfold, M.N.R., Goss, J.P., Green, B., May, P.W., Newton, M.E., Peaker, C.V. | Nitrogen in diamond. | Chemical Reviews, Vol. 120, 4, 10.1021/ acs.chemrev.9b00578 50p. Pdf | Global | HPHT, CVD, synthetics |
| Abstract: Nitrogen is ubiquitous in both natural and laboratory-grown diamond, but the number and nature of the nitrogen-containing defects can have a profound effect on the diamond material and its properties. An ever-growing fraction of the supply of diamond appearing on the world market is now lab-grown. Here, we survey recent progress in two complementary diamond synthesis methods: high pressure high temperature (HPHT) growth and chemical vapor deposition (CVD), how each is allowing ever more precise control of nitrogen incorporation in the resulting diamond, and how the diamond produced by either method can be further processed (e.g., by implantation or annealing) to achieve a particular outcome or property. The burgeoning availability of diamond samples grown under well-defined conditions has also enabled huge advances in the characterization and understanding of nitrogen-containing defects in diamond alone and in association with vacancies, hydrogen, and transition metal atoms. Among these, the negatively charged nitrogen-vacancy (NV-) defect in diamond is attracting particular current interest in account of the many new and exciting opportunities it offers for, for example, quantum technologies, nanoscale magnetometry, and biosensing. |
DS202004-0497 2020 | Ashfold, M.N.R., Goss, J.P., Green, B., May, P.W., Newton, M.E., Peaker, C.V. | Nitrogen in diamond. | Chemical Reviews, Vol. 120, 4, 10.1021/ acs.chemrev.9b00578 50p. Pdf | Global | HPHT, CVD, synthetics |
| Abstract: Nitrogen is ubiquitous in both natural and laboratory-grown diamond, but the number and nature of the nitrogen-containing defects can have a profound effect on the diamond material and its properties. An ever-growing fraction of the supply of diamond appearing on the world market is now lab-grown. Here, we survey recent progress in two complementary diamond synthesis methods: high pressure high temperature (HPHT) growth and chemical vapor deposition (CVD), how each is allowing ever more precise control of nitrogen incorporation in the resulting diamond, and how the diamond produced by either method can be further processed (e.g., by implantation or annealing) to achieve a particular outcome or property. The burgeoning availability of diamond samples grown under well-defined conditions has also enabled huge advances in the characterization and understanding of nitrogen-containing defects in diamond alone and in association with vacancies, hydrogen, and transition metal atoms. Among these, the negatively charged nitrogen-vacancy (NV-) defect in diamond is attracting particular current interest in account of the many new and exciting opportunities it offers for, for example, quantum technologies, nanoscale magnetometry, and biosensing. |
DS202004-0508 2020 | Diggle, P.L., Dhaenens-Johannsson, U., Green, B., Welbourn, C.M., Tran Thi, T.N., Wang, W., Newton, M.E. | Decoration of growth sector boundaries with single nitrogen vacancy centres in as-grown single crystal HPHT synthetic diamond. | Diamond and Related Materials, arxiv.org 21p. | Global | synthetics |
| Abstract: Large (> 100 mm3), relatively pure (type II) and low birefringence single crystal diamond can be produced by high pressure high temperature (HPHT) synthesis. In this study we examine a HPHT sample of good crystalline perfection, containing less than 1 ppb (part per billion carbon atoms) of boron impurity atoms in the {001} growth sector and only tens of ppb of nitrogen impurity atoms. It is shown that the boundaries between {111} and {113} growth sectors are decorated by negatively charged nitrogen vacancy centres (NV?): no decoration is observed at any other type of growth sector interface. This decoration can be used to calculated the relative {111} and {113} growth rates. The bulk (001) sector contains concentrations of luminescent point defects (excited with 488 and 532 nm wavelengths) below 1011 cm?3 (10?3 ppb). We observe the negatively charged silicon-vacancy (SiV?) defect in the bulk {111} sectors along with a zero phonon line emission associated with a nickel defect at 884 nm (1.40 eV). No preferential orientation is seen for either NV? or SiV? defects, but the nickel related defect is oriented with its trigonal axis along the <111> sector growth direction. Since the NV? defect is expected to readily re-orientate at HPHT diamond growth temperatures, no preferential orientation is expected for this defect but the lack of preferential orientation of SiV? in {111} sectors is not explained. |
DM202004-0598 2020 | Idex online | Lightbox to provide basic grading info on its lab grown diamonds. | indexonline.com, Feb. 27, 1/4p. | Global | News item - Lightbox |
DM202004-0612 2020 | JCK | Lab grown diamond update: a look at how the industry is getting organized. | jckonline.com, March 10, 2p. | Global | News item - synthetics |
DM202004-0629 2020 | Rough-polished | GSI identified HTHP lab-grown diamonds with 'laser drill channel'. | rough-polished, Feb. 27, 1/4p. | India | News item - synthetics |
DM202004-0630 2020 | Rough-polished | High tech trend is most promising for industries using diamonds. Synthesis Technology | rough-polished, Feb. 27, 7p. | Global | News item - synthetics |
DM202004-0681 2020 | The Israeli Diamond Industry | Stanford scientists 'cheat thermodynamics' to create diamonds. | en.israelidiamond .co.il, March 11, 1/4p. | Global | News item - synthetics |
DM202004-0682 2020 | TheLoop21 | Global HPHT diamond market business forecast ( 2020-2029) II Element Six, Sumitomo Electric….. | theloop21.com, March 5,1/4p. | Global | News item - synthetics |
DS202004-0548 2020 | Zaitsev, A., Kazuchits, N.M., Kazuchits, V.N., Wang, W. | Nitrogen doped CVD diamond: nitrogen concentration, color and internal stress. | Diamond and Related Materials, March | Global | synthetics |
| Abstract: Single crystal CVD diamond has been grown on (100)-oriented CVD diamond seed in six layers to a total thickness of 4.3 mm, each layer being grown in gas with increasing concentration of nitrogen. The nitrogen doping efficiency, distribution of color and internal stress have been studied by SIMS, optical absorption, Raman spectroscopy and birefringence imaging. It is shown that nitrogen doping is very non-uniform. This non-uniformity is explained by the terraced growth of CVD diamond. The color of the nitrogen-doped diamond is grayish-brown with color intensity gradually increasing with nitrogen concentration. The absorption spectra are analyzed in terms of two continua representing brown and gray color components. The brown absorption continuum exponentially rises towards short wavelength. Its intensity correlates with the concentration of nitrogen C-defects. Small vacancy clusters are discussed as the defects responsible for the brown absorption continuum. The gray absorption continuum has weak and almost linear spectral dependence through the near infrared and visible spectral range. It is ascribed to carbon nanoclusters which may form in plasma and get trapped into growing diamond. It is suggested that Mie light scattering on the carbon nanoclusters substantially contributes to the gray absorption continuum and determines its weak spectral dependence. A Raman line at a wavenumber of 1550 cm?1 is described as a characteristic feature of the carbon nanoclusters. The striation pattern of brown/gray color follows the pattern of anomalous birefringence suggesting that the vacancy clusters and carbon inclusions are the main cause of internal stress in CVD diamond. A conclusion is made that high perfection of seed surface at microscale is not a required condition for growth of low-stress, low-inclusion single crystal CVD diamond. Crystallographic order at macroscale is more important requirement for the seed surface. |
DM202005-0810 2020 | JCK | Be wary of consumer-media coverage of lab-grown diamonds. | JCKOnline.com, April 1, 1/4p. | Global | News item - synthetics |
DM202005-0811 2020 | JCK Online | Pure Grown, IIa, Fenix Challenge lab-grown diamond patent claims ( Carnegie) | JCKOnline.com, April 15, 1/2p. | Global | News item - Carnegie |
DM202006-0997 2020 | Diamonds.net | Lightbox delays new production plant to Q1 2021. | diamonds.net, May 8, 1/4p. | United States, Oregon | News item - Lightbox |
DS202006-0923 2020 | Howell, D., Collins, A.T., Loudin, L.C., Diggle, P.L., D'Haenens-Johansson, U.F.S., Smit, K.V., Katrusha, A.N., Butler, J.E., Nestola, F. | Automated FTIR mapping of boron distribution in diamond. DiaMap_IIb ( synthetics) | Diamonds & Related Materials, In press available, 30p. Pdf | Global | synthetics |
| Abstract: Type IIb diamonds are those that contain more boron than nitrogen. The presence of this uncompensated boron gives rise to absorption in the infrared part of the electromagnetic spectrum, extending into the visible region and often resulting in blue colouration. Here we report on the expansion of the DiaMap freeware (for the automated spectral deconvolution of Type I [nitrogen containing] diamonds) to work on Type IIb diamonds, returning concentrations from three boron-related absorption bands, and determining which band provides the most reliable value. The program uses the calibration coefficients of Collins (2010), which show good relative agreement between the three bands, but might require some further study to confirm their absolute accuracy to the uncompensated boron concentration. The methodology of DiaMap_IIb is applicable to all Type IIb diamonds, both natural and synthetic. Analysis of high-resolution Fourier-transform infrared (FTIR) maps of two high-pressure high-temperature (HPHT) synthetic diamonds using DiaMap_IIb, confirm the growth sector dependence of the boron incorporation. Partitioning of boron strongly favours the octahedral {111} sectors. |
DM202007-1232 2020 | Diamondworld | How lab grown CVD diamonds can be India's ace card in global gems & Jewellery industry. | diamondworld.net, May 26, 1/2p. | India | News item - synthetics |
DM202007-1294 2020 | Rough-polished | Element Six launches first commercially available, general purpose quantum grade diamond. | rough - polished.com, June 16, 1/4p. | Europe, United Kingdom | News item - Element Six |
DM202007-1334 2020 | The Israeli Diamond Industry | NDC's new website goes all- natural. | israelidiamond.co.il, June 24, 1/4p. | Global | News item - NDC |
DM202008-1468 2020 | Bates, R. | Develop their own price scale, seller says. Lab grown | JCKOnline.com, July 7, 1p. | Global | News item - synthetics |
DM202008-1498 2020 | Idex online | Updated bible of lab-grown diamonds. Simic and Deljanin. | idexonline.com, July 9, 1/2p. | Global | News item - synthetics |
DM202008-1553 2020 | Rough-polished | Botswana cannot produce, sale synthetic diamonds. | rough-polished.com, July 23, 1/4p. | Africa, Botswana | News item - synthetics |
DM202009-1704 2020 | Diamonds.net | GIA to give full color, clarity grades for lab-grown. | diamonds.net, Aug. 12, 1/4p. | Global | News item - synthetics |
DM202009-1709 2020 | Forbes | Sustainable mining: the handprint is just as important as the footprint. Supply chain. | Forbes.com, July 29, 1p. | Global | News item - synthetics |
DS202009-1658 2020 | Shang, S.Y., Tong, Y., Zhang, S.X., Huang, F.L. | Study on phase transformation mechanism of various carbon sources in detonation synthesis of diamond. | Fullerenes, nanotubes and carbon nanostructures, Vol. 28, 11, pp. 877-885. | global | synthetics |
| Abstract: In this paper, the phase transformation mechanism of various carbon sources in the synthesis of diamond by direct detonation method was studied. Through designing comparison experiment and the X-ray diffraction (XRD) characterization technique, an experimental study was conducted on the detonation process with the external of the combined carbon source and free carbon source, and without the participation of the external carbon source. The laws of phase transformation of the various carbon sources are obtained, in which the surplus carbon in the explosives participates in the formation of diamonds through the collision growth of droplet-like carbon, the added bonded carbon does not participate in the synthesis of diamond, and the added free carbon forms diamonds through the Martensitic transformation. |
DS202010-1879 2020 | Song, Z., Lu, T., Liu, H., Dai, H., Ke, J., Zhu, W., Zhang, J. | Identification of Type IIa blue CVD diamonds from Huzhou SinoC semiconductor. | Journal of Gemmology, Vol. 37, 3, pp. 306-313. | China | synthetics |
| Abstract: Gemmological and spectroscopic characteristics are reported for two type IIa blue CVD synthetic diamonds from Huzhou SinoC Semiconductor Science and Technology Co. Ltd, China. These are the first relatively large (1.76 and 2.63 ct) blue CVD synthetics examined in NGTC’s laboratories, and their colour was slightly brighter than other blue synthetic diamonds that we have encountered. In the DiamondView, they fluoresced blue (with purple-red in one sample), which is unusual for CVD synthetics. The mid- and near-IR absorption spectra of one sample showed no hydrogen-related features, while the other synthetic diamond showed a weak absorption at 6853 cm?1attributed to hydrogen. The spectra of both samples had a very weak line at 1332 cm?1 due to isolated nitrogen and a distinct band at 9282 cm-1 related to radiation. A very strong GR1 absorption feature was detected by UV-Vis-NIR spectroscopy. Photoluminescence spectra obtained at liquid-nitrogen temperature recorded emissions related to radiation (mainly in the 480-510 nm region), N-V and [Si-V]- centres, and several unassigned weak emissions. This combination of optical centres strongly suggests that these samples underwent post-growth treatment to improve their transparency before they were irradiated to produce blue colouration. |
DM202011-2097 2020 | Diamonds.net | IGI grades record black lab-grown diamond 116 carat. | Diamonds.net, Oct. 1, 1/4p. | Global | News item - synthetics |
DS202011-2056 2020 | Nemeth, P., McColl, K., Garvie, L.A.J., Salzmann, C. | Complex nanostructures in diamond. | Nature Materials, doi:10.1038/s4 1563-020-0759-8 7p. Pdf | Global | meteorites, synthetics |
| Abstract: Meteoritic diamonds and synthesized diamond-related materials contain a wide variety of complex nanostructures. This Comment highlights and classifies this structural complexity by a systematic hierarchical approach, and discusses the perspectives on nanostructure and properties engineering of diamond-related materials. |
DM202011-2133 2020 | Rough-polished | Synthetic diamonds factory to be built in Russia's Pskov Province. ( radio-electronic industry) | rough-polished.com, Oct. 9, 1/4p. | Russia | News item - synthetics |
DM202011-2135 2020 | Rough-polished | 3rd edition of best selling laboratory grown diamonds "bible" set for release. | rough-polished.com, Oct. 8, 1/4p. | Global | News item - synthetics |
DM202011-2137 2020 | Rough-polished | De Beers LGD Lightbox expands to independents in the USA and Canada. | rough-polished.com, Oct. 8, 1/4p. | United States, Canada | News item - Lightbox |
DM202011-2163 2020 | Rough-polished | New world record in diamond growing.. New World Technology 129.47 carat | rough-polished.com, Oct. 22, 1/4p. | Russia | News item - synthetics |
DM202012-2265 2020 | Bradby, J. | Diamond bling made within minutes. ( room temperature) | Sciencetimes.com, Nov. 19, 2p. | Australia | News item - synthetics |
DM202012-2297 2020 | jCK | WD settles litigation with Pure Grown, IIa technologies. M7D Corp. | JCKonline.com, Nov. 26, 1p. | United States | News item - Carnegie |
DM202012-2318 2020 | Rough-polished | Diamond growing technology to be discussed at November webinar. | Rough-Polished.com, Nov. 10, 1/4p. | United States | News item - synthetics |
DM202012-2346 2020 | Yahoo | Lightbox ramps up lab diamond production with new Oregon facility. | yahoo.com, Oct. 29, 1/4p. | United States, Oregon | News item - Lightbox |
DM202101-0096 2020 | Rough-polished | Chinese manufacturer grows largest CVD grown diamond to date 12.75 cts | rough-polished.com, Nov. 30, 1/4p. | China | News item - synthetics |
DM202101-0117 2020 | Rough-polished | Bharat Diamond Bourse to vote on lifting synthetics ban. | Rough-polished.com, Dec. 22, 1/4p. | India | News item - synthetics |
DM202101-0130 2020 | Rough-polished | BDB members give 'in-principle approval' for LGD trading. Bharat Diamond Bourse | Rough-polished.com, Dec. 29, 1/4p. | India | News item - synthetics |
DM202102-0269 2021 | Diamonds.net | GIA spots rare inscription fraud in simulant. ( moissanite) | diamonds.net, Jan. 27, 1p. | United States, California | News item - synthetics |
DM202102-0280 2021 | Jewellery Focus | Green Rocks created diamonds becomes first lab grown grower. | Jewellery Focus, Jan. 14, 1/4p. | United States, Florida | News item - synthetics |
DS202102-0220 2020 | Shearman, R. | What is the story behind Aether and how did the business start? | Gems & Gemology , Vol. 29, 4, pp. 22-24. pdf | Europe, Switzerland | synthetics |
DM202103-0459 2021 | Diamonds.net | Diamonds with fake inscriptions turn up at GIA. | Diamonds.net, Feb. 23, 1/4p. | United States | News item - synthetics |
DM202103-0463 2021 | Financial Post | Diamonds from thin air: the search for a carbon neutral jewel. Lab grown production. | nationalpost.com, Feb. 23, 2p. | Global | News item - synthetics |
DM202103-0485 2021 | New York Market | Key trends in synthetic diamond industry - global market forecast 2021-2026. | nymarket.com, https://www.nymarketreports.com /uncategorized /102498/key-trends -in-synthetic-diamond- industry-impacting- the-global-market-with- forecast-2021-2026/ | Global | News item - synthetics |
DM202103-0494 2021 | Rough-polished | India seeks to develop production of lab-grown diamonds. | Rough-polished.com, Feb. 3, 1/4p. | India | News item - synthetics |
DM202103-0499 2021 | Rough-polished | China dominates production of lab-grown diamonds. | Rough-polished.com, Feb. 9, 1/4p. | China | News item - synthetics |
DM202103-0503 2021 | Rough-polished | Webinar: LGDs journey from 'factory to market'. CVD | Rough-polished.com, Feb. 11, 1/4p. | Global | News item - synthetics |
DM202104-0641 2021 | Diamond World | Global LGD annual output to touch 19.2 million carats by 2030. | diamondWorld.net, March 17, 1/4p. | India | News item - synthetics |
DM202104-0644 2021 | Diamonds.net | GIA now giving details of lab grown treatments. | Diamonds.net, March 16, 1/4p. | United States | News item - synthetics |
DM202104-0648 2021 | Golan, E. | A veteran diamond industry analyst trains his eye on lab-grown prices. | jckonline.com, March 22, 3p. | Global | News item - synthetics |
DM202104-0715 2021 | Rough-polished | Shashikant D. Shah "Mined diamonds and LGDs are separate categories." | rough-polished.com, March 22, 5p. | Global | News item - synthetics |
DM202105-0809 2021 | Bates, R. | Why an ad watchdog warned the Natural Diamond Council: Diamond Foundry | jckonline.com, Apr. 28, 1/2p. | Global | News item - NDC |
DM202105-0827 2021 | Diamonds.net | Diamond Foundry gets warning over ads. | diamonds.net, Apr. 1, 1/4p. | Global | News item Diamond Foundry |
DM202105-0831 2021 | Diamonds.net | Diamond Foundry value hits $ 1.8 billion after fund raising. Synthetics | diamonds.net, Apr. 29, 1/4p. | Global | News item - Diamond Foundry |
DS202105-0762 2021 | Dong, B., Shi, C., Xu, Z., Wang, K., Luo, H., Sun, F., Wang, P., Wu, E., Zhang, K., Liu, J., Song, Y., Fan, Y. | Temperature dependence of optical centers in 1b diamond characteristics by photoluminescence spectra. CVD | Diamond & Related Materials, Vol. 116, 108389, 10p. Pdf | Global | synthetics |
DM202105-0840 2021 | Jck | Is the tide turning for lab grown diamonds? ( no new diamond mines?) | jckonline.com, Apr. 29, 1p. | Global | News item - synthetics |
DM202105-0893 2021 | Rough-polished | Pandora takes eithical stand against mined diamonds. ( lab grown) synthetics | roughpolished.com, May 5, 1/4p. | Global | News item - Pandora |
DS202105-0788 2021 | Savage, N. | Quantum Diamond Sensors Synthetic versions of the super-hard gem stone are driving the development of a class of device with applications in biomedicine and beyond. | https://youtu.be/VCT0wDLyvSs, https://www.nature.com/articles /d41586-021-00742-4? utm_source=Nature+Briefing&utm_campaign=d5a18a3501- briefing-dy-20210329& utm_medium=email&utm_term= 0_c9dfd39373- d5a18a3501-42627851 | Global | synthetic - uses |
DS202105-0797 2021 | Turner, B. | Lab made hexagonal diamonds are stronger than the real thing. | livescience.com, https://www.livescience. com/stronger-hexagonal -diamonds-created.html | Global | synthetics |
DM202106-0994 2021 | Diamonds.net | Natural diamond council seals China partnership. Chow Tai Fook | diamonds.net, May 20, 1/4p. | China | News item - NDC |
DM202106-0999 2021 | Financial Times | Diamond industry takes on lab-grown threat. | financialtimes.com, May 21, 1p. | Global | News item - synthetics |
DM202106-1001 2021 | Idex Online | Pandora's PR master stroke. | idexonline.com, May 5, 1/2p. | Global | News item - Pandora |
DM202106-1002 2021 | Idex Online | Pandora ditches mined diamonds in carbon neutral plan. | idexonline.com, May 5, 1/4p. | Global | News item - Pandora |
DM202106-1010 2021 | JCK | GIA finding more lab-growns being passed off as naturals. | jckonline.com, May 18, 2p. | Global | News item - synthetics |
DM202106-1013 2021 | Jewellery Focus | Aether Diamonds receives world's first vegan certification. ( carbon from air) | jewelleryfocus.co.uk, May 21, 1/4p. | United States | News item - synthetics |
DS202106-0952 2021 | Li, W., Xie, X., Song, J., Xie, R., Wang, J., Li, G.,Hou, H., Lu, J. | Assessment and source identification of toxic metals in an abandoned synthetic diamond production plant from Anhui Province, China. | Environmental Forensics, Vol. 22, 3-4, pp. 340-350. abstract only | China | synthetics |
| Abstract: In this study, soil and sediment samples along with groundwater samples were collected and analyzed from an abandoned synthetic diamond production plant in Anhui Province, South China. Chemical analysis, pollution characteristics analysis, and correlation analysis were conducted to assess and to determine the source(s) of the toxic metal and organic pollutions in the study sites. The Co and Ni concentrations of soil samples collected from the production area exceed the risk screening value for contaminated development land in Soil Environment Quality Standards for soil pollution risk control on construction land (Trial) of China, while the concentrations of other toxic elements such as Cr, Cu, and Zn are lower than the screening value. The PCA and HCA results are consistent with the correlation coefficient analysis and indicate that industrial activities are the main sources of Co and Ni. The chemical composition and source analysis results of soil and groundwater show that toxic metals originating from catalyst and low pH value from acid waste water should be the main point of concern in the synthetic diamond production plant. |
DM202106-1028 2021 | Rough-polished | Natural diamond industry organizations ask Pandora to correct recent public statement. | roughpolished.com, May 10, 1/4p. | Global | News item - Pandora |
DM202106-1034 2021 | Rough-polished | DMIA to showcase diamond verification equipment in New York. | roughpolished.com, May 11, 1/4p. | United States | News item - DMIA |
DM202106-1036 2021 | Rough-polished | Natural diamond industry organizations ask Pandora to correct recent public statement. | roughpolished.com, May 10, 1/4p. | Global | News item - Pandora |
DM202106-1053 2021 | Rough-polished | Choi Tai Fook & NDC partner to promote natural diamonds. | roughpolished.com, May 24, 1/4p. | China | News item - NDC |
DM202106-1059 2021 | Rough-polished | Lab-grown diamond sales volume to exceed that of natural diamonds in future - analyst. Zimnisky | roughpolished.com, May 26, 1/4p. | Global | News item - synthetics |
DM202106-1062 2021 | Rough-polished | DMIA Diamond Verification instruments showcase to kick off on June 1. | roughpolished.com, May 28, 1/4p. | United States, New York | News item - DMIA |
DM202106-1064 2021 | Russia | Siberians synthesized diamonds in rare-earth metal melts. | https://info.sibnet .ru/article/ 587959, https://treo. substack.com | Russia | News item - synthetics |
DM202107-1175 2021 | Gruske, C. | Diamond versus diamond. | CIM Magazine, June 8, 2p. Pdf | Global | News item - synthetics |
DM202107-1179 2021 | Idex Online | Record imposter 6.18 ct "natural diamond" was lab-grown. | idexonline.com, June 11, 1/4p. | Asia, Thailand | News item - IGI |
DM202107-1200 2021 | Rough-polished | China's NGTC laboratory tests new variety of CVD synthetic diamonds. | roughpolished.com, June 4, 1/4p. | China | News item - synthetics |
DM202107-1210 2021 | Rough-polished | World's first regulator-approved diamond coin launched. IGI Diamond Standard Coin | roughpolished.com, June 11, 1/4p. | Global | News item - IGI |
DM202108-1349 2021 | Diamonds.net | A call for synthetics transparency. | diamonds.net, July 22, 1/4p. | Global | News item - synthetics |
DM202108-1360 2021 | Idex online | The first global institute to fully grade lab grown diamonds . IGI | idexonline.com, July 15, 1/4p. | Global | News item - IGI |
DM202108-1411 2021 | Rough-polished | Switching to synthetic gems could harm the very communities consumers worry about. | roughpolished.com, July 28, 1/4p. | Global | News item - synthetics |
DM202109-1528 2021 | JCK | Lightbox to offer bigger, better diamonds in colors, pink, blue, and white and up to 2 cts @ $ 800.00 De Beers | JCKonline.com, Aug. 21, 1p. | Global | News item - Lightbox |
DM202109-1572 2021 | The diamond Loupe | The Guardian: Why LGD might not be ethical alternative. | thediamondloupe.com, July 7, 1/4p. | Global | News item - LGD |
DS202110-1600 2021 | Barrie, E., Eaton-Magana, S. | CVD Laboratory-grown diamond with counterfeit GIA inscription. | Gems & Gemology, Vol. 57, 2, summer pp. 150-152. gia.edu/gems-gemology | United States, California | synthetic |
| Abstract: In recent months, GIA has seen a number of laboratory-grown diamonds submitted for update or verification services with counterfeit inscriptions referencing GIA natural diamond reports ("GIA laboratory prevents attempted fraud"). One recent example is a 3.07 ct round brilliant submitted to the Antwerp lab for update service (figure 1). It bore an inscription matching a GIA report for a natural diamond that had been submitted in 2018. Microscopic examination quickly revealed, however, that the inscription was in fact fraudulent. Further analysis indicated a laboratory-grown origin. |
DM202110-1652 2021 | Bates, R. | Diamond Foundry is planning to open second lab-grown facility in Trujillo, Spain. | JCKOnline.com, Sept. 18, 1/3p. | Europe, Spain | News item - Diamond Foundry |
DM202110-1669 2021 | Diamonds.net | Podcast: from tech mogul to lab-grown advocate. Lusix | diamonds.net, Sept. 13, 1/4p. | Europe, Israel | News item - Lusix |
DM202110-1686 2021 | Livemint | Are lab-grown diamonds really better for the Earth? | livemint.com, Sept. 26, 1p. | India | News item - synthetics |
DM202110-1721 2021 | Rough-polished | NDC announces 'ASSURE program 2.0' to protect consumers and support DVI manufacturers. | rough-polished.com, Sept. 29, 1/4p. | Global | News item - NDC |
DM202111-1799 2021 | Bates, R. | The term "diamond simulant" is confusing and should be banned. | jckonline.com, Oct. 20, 3p. | Global | News item - moissanite, cubic-zirconia |
DM202111-1841 2021 | Mining Review Africa | Natural vs lab-grown diamonds - where does the true value lie? Discussion and comments by Campbell and Zimnisky | Miningreviewfrica.com, Oct. 5, 3p. | Global | News item - synthetics |
DM202111-1875 2021 | Rough-polished | Gemological Science International launches ASSURANCE by GSI tm. | rough-polished.com, Oct. 25, 1/4p. | Global | News item - ASSURANCE |
DM202111-1876 2021 | Rough-polished | CTF tests its lab-grown brand 'Cama' on Tmall website. | rough-polished.com, Oct. 25, 1/4p. | China | News item - Cama |
DM202111-1889 2021 | The Israeli Diamond Industry | De Beers' lab-grown diamonds company begins selling loose stones. | en.israelidiamond industry.com, Oct. 19, 1/4p. | Global | News item - Lightbox |
DM202112-1967 2021 | Bates, R. | Is the owner of Lightbox supplying Pandora's Box? | jckonline.com, Nov. 5, 1p. | Global | News item - Pandora |
DM202112-1976 2021 | Creamers Mining Weekly | Lab-grown diamonds are latest victims of China's power crisis. | creamersminingweekly, Nov. 1, 1/4p. | China | News item - synthetics |
DM202112-1992 2021 | Diamonds.net | Lightbox now declaring post-growth treatments. | diamonds.net, Nov. 4, 1/4p. | Global | News item - Lightbox |
DM202112-2010 2021 | Idex Online | Two thirds of US independent jewelers now sell lab growns. | idexonline.com, Oct. 29, 1/4p. | United States, Canada | News item - synthetics |
DS202112-1938 2020 | Lysakovskyi, V.V., Ivakhnenko, S.O., Kvasntsya, V.M., Kovalenko, T., Burchenia, A.V. | Features of morphogenesis of diamond single crystals more than 2 carats grown by temperature gradient method. | Journal of Crystal Growth, Vol. 550, 12890, 6p. Pdf | Global | synthetics |
| Abstract: The morphology of ultra-large polyhedra of diamond grown under high pressure and high temperature (5.6-5.8 GPa and 1400-1700 °C) in a growth system based on Fe-Co was studied. The grown diamond polyhedra are crystals of an octahedral habit with minor faces of a cube, rhombic dodecahedron, and trapezohedrons {3 1 1}, {5 1 1} and {7 1 1}. The morphological features of the grown crystals are the skeletal growth of faces of various simple forms and the so-called "binary growth" of single crystal. The characteristic of these growth phenomena is given and possible reasons for their manifestation are described. |
DM202112-2053 2021 | Rough-polished | Zhadanov commentary " The use of diamonds in high technologies is the main and key target of the diamond synthesis technologies. | rough-polished.com, Nov. 15, 8p. | Global | News item - synthetics |
DM202112-2066 2021 | Rough-polished | International Grown Diamond Association launches IGDA 2.0. | rough-polished.com, Nov. 11, 1/4p. | Global | News item - IGDA |
DM202201-0071 2021 | Diamonds.net | Out & About watching De Beers grow diamonds in Oregon. | diamonds.net, Dec. 16, 1/4p. | United States, Oregon | News item - synthetics |
DM202201-0080 2021 | Idex Online | Blessed are the diamond makers. ( Pope) | idexonline.com, Dec. 10, 1/2p. | Global | News item - synthetics |
DM202201-0093 2021 | Jeweller Magazine | China leading the way for lab-created diamond production. | jewellermagazine.com, Nov. 28, 3p. | China | News item - synthetics |
DM202201-0128 2021 | Rough-polished | Consumer appetite for lab brown diamonds grows with desire for larger diamonds. | rough-polished.com, Dec. 13, 1/4p. | Global | News item - synthetics |
DM202201-0152 2021 | Shor, R. | Larger lab-grown diamonds and crypto-millions - our brave new world for 2022. | Consultant, linkedin Dec. 21, 3p. | Global | News item - synthetics |
DM202202-0252 2022 | Diamonds.net | IGI grades recent blue lab-grown diamond 150.42 ct synthetic | diamonds.net, Jan. 23, 1/4p. | United States | News item - synthetics |
DM202202-0312 2022 | The Israeli Diamond Company | Russian LGD producer promises to double production in 2022. Synthesis technology is located in Moglino special economic zone. | isrealidiamond.co.il, Jan. 17, 1/4p. | Russia | News item - synthetics |
DM202203-0375 2022 | All africa | Synthetic diamonds no threat to sector NDTC. | allafrica.com, Feb. 15, 1/4p. | Africa, Namibia | News item - synthetics |
DM202203-0377 2022 | Bates, R. | Lab-grown diamonds setting new size records. | jckonline.com, Feb. 1, 1p. | Europe, Ukraine, China | News item - synthetics |
DM202203-0424 2022 | Jeffay, J. | LUSIX, the lab-grown company, has raised $ 45 mln to build new plant in Israel to expand its production. | idexonline.com, Feb. 10, 1/4p. | Europe, Israel | News item - LUSIX |
DM202203-0428 2022 | Jewellery Focus | Spot the difference: lab-grown vs mined diamonds. | jewelleryfocus.co.uk, Feb. 9, 2p. | Global | News item - synthetics |
DM202203-0447 2022 | Rough-polished | Part II: synthetic diamonds … with the success of growing gem-quality diamonds at a reasonable cost, next step was to achieve larger sizes, improve quality, and produce an array of colour options to offer consumers. | rough-polished.com, Jan. 31, 2p. | Global | News item - synthetics |
DM202203-0455 2022 | Rough-polished | Lab-grown diamond producer Lusix expands team. Axelrod | rough-polished.com, Feb. 4, 1/4p. | Europe, Israel | News item - Lusix |
DM202203-0482 2022 | The Israeli Diamond Company | British Company makes record breaking LGD 150.42 carats. Meylor Global | en.israelidiamond.co.il, Feb 3, 1/4p. | Europe, United Kingdom | News item - Meylor Global |
DM202204-0552 2022 | Bates, R. | Interview with LUSIX chairman Benny Landa. | jckonline.com, Mar. 7, 5p. | Europe, Israel | News item - Lusix |
DM202204-0574 2022 | Diamonds.net | Alrosa to stop funding the Natural Diamond Council. | diamonds.net, Mar. 6, 1/4p. | Global | News item - NDC |
DM202204-0577 2022 | Diamonds.net | Chow Sang Sang launches lab-grown platform. | diamonds.net, Mar. 24, 1/4p. | Asia, Hong Kong | News item - synthetics |
DM202204-0583 2022 | Idex online | Diamond Foundry sues US government over polishing tariffs on China. | idexonline.com, Mar. 24, 1/4p. | China, United States | News item - Diamond Foundry |
DM202204-0585 2022 | JCK | Why growing diamonds using captured carbon is the next frontier. | jckonline.com, Mar. 14, 4p. | Global | News item - synthetics |
DM202204-0588 2022 | Jeffay, J. | "Your big diamond might be fake" - provocative documentary launches in US. | idexonline.com, Mar. 13, 1/3p. | United States | News item - synthetics |
DM202204-0592 2022 | Levy, A. | An industry veteran on how lab-grown diamonds are pushing the trade to experiment. | jckonline.com, Mar. 21, 2p. | Global | News item - synthetics |
DM202204-0629 2022 | Rough-polished | Millennials hot to buy lab grown diamonds. | Rough-polished.com, Mar. 18, 1/4p. | Global | News item - synthetics |
DM202204-0643 2022 | Scott, D. | Why can't mined and lab-grown diamond supports get along? | jckonline.com, Mar. 7, 3p. | Global | News item - synthetics |
DM202205-0780 2022 | Idex Online | Diamond workers defending Ukraine. Meylor Global synthetics | Idexonline.com, Apr. 7, 1p. | Europe, Ukraine | News item - Meylor Global |
DM202205-0793 2022 | JCK | 5 Things I learned at Lightbox tour. | Jckonline.com, Apr. 2, 3p. | United States | News item - Lightbox |
DM202205-0813 2022 | Rough-polished | Dr. Reinhorn of Lusix "we see many opportunities to grow". | rough-polished.com, Mar. 28, 3p. | Europe, Israel | News item - LUSIX |