Spring 2013 - Vol. 49, No. 1

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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.

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Articles (4)

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Regular Features

Lab notes

Lab Notes

The latest advances and findings from GIA laboratories.

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Gem News

Gem News International

Global coverage of gem sources, notable new gem materials, and recent industry developments.

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Book Review

Book Reviews

Your guide to the latest gem and jewelry books and other media.

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Abstract

Gemological Abstracts

Summaries of important gem and jewelry articles recently published elsewhere.

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THE DR. EDWARD J. GÜBELIN

MOST VALUABLE ARTICLE AWARD

Wang MVA

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

Huong MVA

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

Zwaan MVA

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