Colored Gems, Chinese Jewelry Designers, and Colored Diamond Spectra
By Duncan Pay, Editor-in-Chief

Welcome to the first Gems & Gemology of 2015!

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Articles (5)


The Chinese Soul in Contemporary Jewelry Design

By Andrew Lucas, Merilee Chapin, Moqing Lin, and Xiaodan Jia , Apr 30

Guided by their cultural heritage and powered by a rapidly growing domestic consumer market, Chinese designers are exerting a powerful influence on the global stage.

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Amethyst from Boudi, Morocco

By Fabrizio Troilo, Abdelghani El Harfi, Salahaddine Mouaddib, Erica Bittarello, and Emanuele Costa , Apr 30

An introduction to Moroccan amethyst, which features distinctive color zoning and inclusions.

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Optical Properties
Optical Properties

Visible Absorption Spectra of Colored Diamonds

By James E. Shigley and Christopher M. Breeding , Apr 30

Features a foldout chart containing representative visible spectra and photos of the major color categories of diamond.

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Mozambique: A Ruby Discovery for the 21st Century

By Merilee Chapin, Vincent Pardieu, and Andrew Lucas , Apr 30

Explores the geology, production, and yield of the world’s most commercially important ruby deposit.

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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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Sri Lanka: Expedition to the Island of Jewels
Andrew Lucas, Armil Sammoon, A.P. Jayarajah, Tao Hsu, and Pedro Padua

Exploring the Chinese Gem and Jewelry Industry
Tao Hsu, Andrew Lucas, Zhili Qiu, Mu Li, and Qingyuan Yu

Three-Phase Inclusions in Emerald and Their Impact on Origin Determination
Sudarat Saeseaw, Vincent Pardieu, and Supharart Sangsawong

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