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  • Cover of Gems & Gemology Fall 2015 issue, featuring rough green and black stones

Fall 2015

  • $15.00

Colombian Trapiche Emeralds: Recent Advances in Understanding Their Formation
Isabella Pignatelli, Gaston Giuliani, Daniel Ohnenstetter, Giovanna Agros•, Sandrine Mathieu, Christophe Morlot, and Yannick Branquet

Large Colorless HPHT-Grown Synthetic Gem Diamonds from New Diamond Technology, Russia
Ulrika F.S. DíHaenens-Johansson, Andrey Katrusha, Kyaw Soe Moe, Paul Johnson, and Wuyi Wang

Letöengís Unique Diamond Proposition
Russell Shor, Robert Weldon, A.J.A. (Bram) Janse, Christopher M. Breeding, and Steven B. Shirey

Origin Determination of Dolomite-Related White Nephrite through Iterative-Binary Linear Discriminant Analysis
Zemin Luo, Mingxing Yang, and Andy H Shen

Every issue also includes the most up-to-date reports from the GIA Laboratory (Lab Notes) and gemologists around the world (Gem News International).

GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout.

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