COLORED STONES AND ORGANIC MATERIALS

• Colloidal and polymeric nature of fossil amber. D. Gold, B. Hazen, and W. G. Miller, Organic Geochemistry, Vol. 30, No. 8B, 1999, pp. 971–983.
• DSC-measurements of amber and resin samples. P. Jablonski, A. Golloch, and W. Borchard, Thermochimica Acta, Vol. 333, 1999, pp. 87–93.
• Grafting of cryopreserved mantle tissues onto cultured pearl oyster. C. Horita, H. Mega, and H. Kurokura, Cryo-Letters, Vol. 20, 1999, pp. 311–314.
• The opal bug—The role of bacteria. Minfo®, New South Wales Mining and Exploration Quarterly, No. 65, November 1999, pp. 26–29.
• Raman spectroscopic study of 15 gem minerals. E. Huang, Journal of the Geological Society of China [Taiwan], Vol. 42, No. 2, 1999, pp. 301–318.
• Spectres Raman des opales: Aspect diagnostique et aide à la classification [Raman spectra of opals: Diagnostic features and an aid to classification]. M. Ostrooumov, E. Fritsch, B. Lasnier, and S. Lefrant, European Journal of Mineralogy, Vol. 11, No. 5, 1999, pp. 899–908 [in French with English abstract].
• Texture formation and element partitioning in trapiche ruby. I. Sunagawa, H.-J. Bernhardt, and K. Schmetzer, Journal of Crystal Growth, Vol. 206, 1999, pp. 322–330.
• Trace-element fingerprinting of jewellery rubies by external beam PIXE. T. Calligaro, J.-P. Poirot, and G. Querré, Nuclear Instruments and Methods in Physics Research B, No. 150, 1999, pp. 628-634.
• Color cathodoluminescence of natural diamond with a curvilinear zonality and orbicular core. E. P. Smirnova, R. B. Zezin, G. V. Saparin, and S. K. Obyden, Doklady Earth Sciences, Vol. 366, No. 4, 1999, pp. 522–525.
• Diamonds from Wellington, NSW: Insights into the origin of eastern Australian diamonds. R. M. Davis, S. Y. O’Reilly, and W. L. Griffin, Mineralogical Magazine, Vol. 63, No. 4, 1999, pp. 447–471.
• Fluvial characteristics of the diamondiferous Droogeveldt gravels, Vaal Valley, South Africa. R. I. Spaggiari, J. D. Ward, and M. C. J. de Witt, Economic Geology, Vol. 94, No. 5, 1999, pp. 741–748.
• Growth of high purity large synthetic diamond crystals. R. C. Burns, J. O. Hansen, R. A. Spits, M. Sibanda, C. M. Welbourn, and D. L. Welch, Diamond and Related Minerals, Vol. 8, No. 8–9, 1999, pp. 1433–1437.
• The impact of new diamond marketing strategies on the diamond pipeline. C. Even-Zohar, Mazal U’Bracha, Vol. 15, No. 115, November 1999, pp. 35–38, 40, 41, 44–46.
• Magnetic mapping of Majhgawan diamond pipe of central India. B. S. P. Sarma, B. K. Verma, and S. V. Satyanarayana, Geophysics, Vol. 64, No. 6, 1999, pp. 1735–1739.
• Manufacture of gem quality diamonds: A review. D. Choudhary and J. Bellare, Ceramics International, Vol. 26, 2000, pp. 73–85.
• Namibia’s diamond riches. Mining Journal, London, Vol. 333, No. 8555, October 29, 1999, pp. 344–345.
• Rough rewards. L. Rombouts, Basel Magazine, August 2000, pp. 39, 41–43.
• Spectroscopy of defects and transition metals in diamond. A. T. Collins, Diamond and Related Materials, Vol. 9, 2000, pp. 417–423.
• Study on inclusion in synthetic diamond. B. Lin, H. Wan, and M. Peng, Kuangwu Yanshi (Bulletin of Mineralogy, Petrology and Geochemistry), Vol. 18, No. 4, 1999, pp. 308–309 [in Chinese with English abstract].
• Synthetic blue diamonds hit the market. C. P. Smith and G. Bosshart, Rapaport Diamond Report, June 4, 1999, Vol. 22, No. 20, pp. 114–116.
• Tertiary-age diamondiferous fluvial deposits of the lower Orange River Valley, southwestern Africa. R. J. Jacob, B. J. Bluck, and J. D. Ward, Economic Geology, Vol. 94, No. 5, 1999, pp. 749–758.

GEM LOCALITIES

• Amethyst aus Brasilien [Amethyst from Brazil]. R. Balzer, Lapis, Vol. 24, No. 10, 1999, pp. 13–18 [in German].
• Exotic origin of the ruby deposits of the Mangari area in SE Kenya. A. Mercier, P. Debat, and J. M. Saul, Ore Geology Reviews, Vol. 14, 1999, pp. 83–104.
• Mineralogical characteristics of chatoyant quartz in Luodian County, Guizhou. M. Deng, Kuangwu Yanshi (Bulletin of Mineralogy, Petrology and Geochemistry), Vol. 18, No. 4, 1999, pp. 416–417 [in Chinese with English abstract].
• Mineralogical and geochemical investigation of emerald and beryl mineralisation, Pan-African Belt of Egypt: Genetic and exploration aspects. H. M. Abdalla and F. H. Mohamed, Journal of African Earth Sciences, Vol. 28, No. 3, 1999, pp. 581–598.
• Raspberry-red grossular from Sierra de Cruces Range, Coahuila, Mexico. C. A. Geiger, A. Stahl, and G. R. Rossman, European Journal of Mineralogy, Vol. 11, No. 6, 1999, pp. 1109–1113.
• Ruby from Tunduru-Songea, East Africa: Some basic observations. G. Hamid, S. M. B. Kelly, and G. Brown, Australian Gemmologist, Vol. 20, No. 8, pp. 326–330.

JEWELRY HISTORY

• The rise and fall of an enterprise cluster in Africa: The jewellery industry in South Africa. M. Da Silva, South African Geographical Journal, 1999, Vol. 18 No. 3, pp. 156–162.
• The use of gemstones in antique jewellery. A. Miller, ICA Gazette, January/February 2000, pp. 16–17.

JEWELRY RETAILING

• Mistakes jewelers make when they retire. Jewelers’ Circular Keystone, Vol. 170, No. 10, 1999, pp. 142–144.
• The return of the middleman. J. McDonald, GemKey Magazine, Vol. 1, No. 5, July–August 1999, p. 68.

PRECIOUS METALS

• Metallurgy of microalloyed 24 carat [sic] golds. C. W. Corti, Gold Bulletin, Vol. 32, No. 2, 1999, pp. 39–47.
• PIXE in an external microbeam arrangement for the study of finely decorated Tartesic gold jewellery items. G. Demortier, F. Fernando-Gomez, M. A. Ontalba Salamanca, and P. Coquay, Nuclear Instruments and Methods in Physics Research B, No. 158, 1999, pp. 275–280.

SYNTHETICS AND SIMULANTS

• Controlled crystallization of emerald from the fluxed melt. S. N. Barilo, G. L. Bychkov, L. A. Kurnevich, N. I. Leonuk, V. P. Mikhailov, S. V. Shiryaev, V. T. Koyava, and T. V. Smirnova, Journal of Crystal Growth, Vol. 198/199, Part 1, 1999, pp. 716–722.
• Pulsation processes at hydrothermal crystal growth (beryl as example). V. G. Thomas, S. P. Demin, D. A. Foursenko, and T. B. Bekker, Journal of Crystal Growth, Vol. 206, 1999, pp. 203–214.

TREATMENTS

• Analysis of fissure-filled turquoise, emeralds, and rubies by near-infrared spectroscopy. D. W. Armstrong, X. Wang, C. R. Beesley, and R. Rubinovitz, American Laboratory, Vol. 31, No. 20, October 1999, pp. 41–42, 44, 47.
• The effect of the gamma-irradiation dose combined with heat on the colour enhancement of colourless quartz. M. V. B. Pinheiro, F. S. Lameiras, K. Krambrock, J. Karfunkel, and J. B. da Silva, Australian Gemmologist, Vol. 20, No. 7, 1999, pp. 285–288.
• Radioactivity of neutron-irradiated cat’s-eye chrysoberyls. S. M. Tang and T. S. Tay, Nuclear Instruments and Methods in Physics Research B, No. 150, 1999, pp. 491–495.
• Verneuil synthetic corundums with induced “fingerprints.” J. Free, I. Free, G. Brown, and T. Linton, Australian Gemmologist, Vol. 20, No. 8, 1999, pp. 342–347.

MISCELLANEOUS

• Carving out a future. Basel Magazine, No. 7, October 1999, pp. 33–34.

Gemological Abstracts Editor:
A. A. Levinson, University of Calgary, Alberta, Canada
 
Review Board:
Troy Blodgett - GIA Gem Trade Laboratory, Carlsbad
Anne M. Blumer - Bloomington, Illinois
Peter R. Buerki - GIA Research, Carlsbad
Jo Ellen Cole - GIA Museum Services, Carlsbad
R. A. Howie - Royal Holloway, University of London
Mary L. Johnson - GIA Gem Trade Laboratory, Carlsbad
Jeff Lewis - New Orleans, Louisiana
Taijin Lu - GIA Research, Carlsbad
Wendi M. Mayerson - GIA Gem Trade Laboratory, New York
James E. Shigley - GIA Research, Carlsbad
Jana E. Miyahira-Smith - GIA Education, Carlsbad
Kyaw Soe Moe - GIA Gem Trade Laboratory, Carlsbad
Maha Tannous - GIA Gem Trade Laboratory, Carlsbad
Rolf Tatje - Duisburg, Germany
Sharon Wakefield - Northwest Gem Lab, Boise, Idaho
June York - GIA Gem Trade Laboratory, Carlsbad
Philip G. York - GIA Education, Carlsbad