Integrating G&G with GIA’s Gemology Education
By Duncan Pay, Editor-in-Chief

We're creating synergy within GIA by supplementing our education curriculum with relevant research from G&G. This tie-in exposes the tremendous amount of important work that G&G authors—both internal and external to GIA—have done to enrich our collective knowledge and share it with a wider, younger audience.

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Articles (4)


Nephrite Jade from Val Malenco, Italy: Review and Update

Ilaria Adamo, Rosangela Bocchio, Jul 24, 2013

Analysis of 21 rough and gem-quality samples offers an update on the composition and properties of this pale green gem from the Italian Alps.

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Optical Properties
Optical Properties

Fluorescence Produced by Optical Defects in Diamond

Yun Luoand Christopher M. Breeding, Jul 24, 2013

How variations in UV lamp output can affect observed fluorescence color and intensity.

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Optical Properties
Optical Properties

Optical Defects in Diamond:
A Quick Reference Chart

James E. Shigleyand Christopher M. Breeding, Jul 24, 2013

A simple chart on optical defects in diamond, including those that produce coloration and fluorescence colors.

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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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Gemological Abstracts

Summaries of important gem and jewelry articles recently published elsewhere.

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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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