• Blood money. M. Rapaport, Rapaport Diamond Report, Vol. 22, No. 42, November 5, 1999, pp. 1, 12, 13, 56.  
• U.S. Congress: Draft legislation calls for comprehensive diamond certification. C. Even-Zohar and L. Schwartz, Mazal U'Bracha, Vol. 15, No. 116, December 1999, pp. 35-45 passim.  
• Damage to the international diamond market will not break the link between 'the guns and the gold.' N. Oppenheimer, Mazal U'Bracha, Vol. 15, No. 116, December 19999, pp. 24, 25, 27-29.

• Chinese freshwater begins new era. B. Sheung, Jewellery News Asia, No. 177, May 1999, pp. 92, 94, 96, 99.  
• Japanese Akoya report. B. Sheung, Jewellery News Asia, No. 181, September 1999, pp. 178-204 passim.  
• Raman spectra of silicate garnets. B.A. Kolesov and C.A. Geiger, Physics and Chemistry of Minerals, Vol. 25, 1998, pp. 142-151.  
• Rubin, Saphir, Korund [Ruby, sapphire, corundum]. extraLapis, No. 15, 1998, 96 pp. [in German]  
• Vergleichende Untersuchungen an Rhodolithen verschiedener Provenienz [Comparative studies of rhodolite garnets of different origin]. Th. Lind, U. Henn, and C.C. Milisenda, Zeitschrift der Deutschen Gemmologischen Gesellschaft, Vol. 47, No. 1, 1998, pp. 53-59.

• Ashton up but outlook mixed. Mining Journal, London, Vol. 332, No. 8523, March 19, 1999, p. 202.  
• Hope springs eternal. A. Butler and R. Nicholson, Chemistry in Britain, Vol. 34, No. 12, December 1998, pp. 34-36.  
• Just your type. R. Weldon, Professional Jeweler, Vol. 2, No. 8, August 1999, pp. 30, 32.  
• Multiplying mines. L. Rombouts, Basel Magazine, No. 5, August 1999, pp. 37-39.  
• Polished consumers are trading down. M. Mitchell, Mazal U'Bracha, Vol. 15, No. 100, April 1999, pp. 30-32.  
• Twinning in natural diamond. I. Contact twins. A. Yacoot, M. Moore, and W.G. Machado, Journal of Applied Crystallography, Vol. 31, 1998, pp. 767-776.  
• Twinning in natural diamond. II. Interpenetrant cubes. A. Yacoot, M. Moore, and W.G. Machado, Journal of Applied Crystallography, Vol. 31, 1998, pp. 777-782.

• Smaragde, das 'Grune Feuer' aus Kolumbien [Emeralds, the 'green fire' from Colombia]. F. Schindler, Lapis, Vol. 23, No. 10, 1998, pp. 13-18 [in German].  
• Ruby and variously coloured sapphires from Ilakaka, Madagascar. K. Schmetzer, Australian Gemmologist, Vol. 20, No. 7, 1999, pp. 282-284.  
• Sapphire find in Madagascar sparks gem rush, softens prices. J. Henricus, Jewellery News Asia, No. 179, July 1999, pp. 44-46, 48, 49.  
• Sapphires from Madagascar revive Sri Lankan gem industry. J. Henricus. Jewellery News Asia, No. 182, October 1999, pp. 54-56, 58.  
• Why gemstones from Madagascar differ from those of from Sri Lanka. J. Henricus. Jewellery News Asia, No. 182, October 1999, p. 59.

• Gemological applications of X-ray diffraction topography techniques. T. Liangguang, H. Wenhui, C. Youfa, L. Huafeng, and T. Xin, Journal of Gems & Gemmology, Vol. 1, No. 2, 1999, pp. 41-44 [in Chinese with English abstract].  
• Tester model 590 for colourless moissanite/diamond: An instrument evaluation. V.M.F. Hammer and J. Stefan, Australian Gemmologist, Vol. 20, No. 7, 1999, pp. 298-302.

• Emerald man. S. Whittington, J. Vose, and C. Hess, Archaeology, Vol. 51, No. 4, 1998, p. 26.  
• Hildegard von Bingen De Lapidibus--Welche Steine beschrieb Hildegard tatsachlich? [Which stones did Hildegard really describe? M. Glas, Lapis, Vol. 23, No. 6, 1998, pp. 46-52 [in German].

• Diamond jewelry consumers in the United States: Who buys what, for how much, how often and why. R. Lennox, Mazal U'Bracha, Vol. 15, No. 115, November 1999, pp. 47-51.

• Effects of the phosphorous-ion additive on the crystal habit of the emerald crystals grown from the V₂O₅-Li₂O-P₂O₅ fluxes. M. Kayama and J. Kuwano, Journal of Crystal Growth, Vol. 193, No. 4, 1998, pp. 648-655.
  EPR of new nickel-nitrogen center in annealed synthetic diamond. R.I. Mashkovtsev, Yu. N. Pal'yanov, Solid State Communications, Vol. 111, No. 7, 1999, pp. 397-402.  
• FTIR features of Guilin hydrothermally-grown synthetic emerald and its significance. G. Shi, Journal of Gems & Gemmology, Vol. 1, No. 1, 1999, pp. 40-44 [in Chinese with English abstract]  
• Examining flame fusion synthetic ruby with fingerprint inclusions. T.T. Sun and Z.C. Guang, Jewellery News Asia, No. 181, September 1999, pp. 104, 106.

• Emerging markets: The divide widens. Supplement to Mining Journal, London, Vol. 333, No. 8554, October 22, 1999, 22 pp.

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
Michael Gray - Coast to Coast, Missoula, Montana
R. A. Howie - Royal Holloway, University of London
Mary L. Johnson - GIA Gem Trade Laboratory, Carlsbad
Jeff Lewis - San Diego, Carlsbad
Margot McLaren - Carlsbad, California
Jana E. Miyahira-Smith - GIA Education, Carlsbad
Carol M. Stockton - Alexandria, Virginia
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