The quarterly journal of the gemological institute of america
EDITORIAL
Enriching a Tradition
By Duncan Pay, Editor-in-Chief
We’re placing a remarkable resource—almost 80 years—of groundbreaking gemological knowledge at your fingertips.
Articles (4)
A Comparison of Modern and Fossil Ivories Using Multiple Techniques
This article provides identification criteria to distinguish between modern and fossil (mammoth) elephant ivory.
Auction Houses: A Powerful Market Influence on Major Diamonds and Colored Gemstones
A report on how high-profile jewelry auctions have affected the gem and jewelry market.
Gemological Characteristics of Saltwater Cultured Pearls Produced After Xenotransplantation
Spectroscopic and radiographic study of experimental saltwater cultured pearls produced from xenotransplantation between P. margaritifera and P. maxima.
Infrared Spectroscopic Study of Filled Moonstone
A study on how infrared spectroscopy provides conclusive evidence of impregnated moonstone.
REGULAR FEATURES
GEM NEWS INTERNATIONAL
Global coverage of gem sources, notable new gem materials, and recent industry developments.
GEMOLOGICAL ABSTRACTS
Summaries of important gem and jewelry articles recently published elsewhere.
THE DR. EDWARD J. GÜBELIN
MOST VALUABLE ARTICLE AWARD
CVD Synthetic Diamonds from Gemesis Corp
Wuyi Wang, Ulrika F. S. D’Haenens-Johansson, Paul Johnson, Kyaw Soe Moe, Erica Emerson, Mark Newton, and Thomas M. Moses Wuyi Wang, Ulrika F. S. D’Haenens-Johansson, Paul Johnson, Kyaw Soe Moe, Erica Emerson, Mark Newton, and Thomas M. Moses
Gemstones from Vietnam: An Update
Le Thi-Thu Huong, Tobias Häger, Wolfgang Hofmeister, Christoph Hauzenberger, Dietmar Schwarz, Pham Van Long, Ursula Wehmeister, Nguyen Ngoc Khoi, and Nguy Tuyet Nhung
Emeralds from the Fazenda Bonfim Region, Rio Grande do Norte, Brazil
J. C. (Hanco) Zwaan, Dorrit E. Jacob, Tobias Häger, Mário T. O. Cavalcanti Neto, and Jan Kanis
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