Summer 2019 - Volume 55, Issue 2

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Editorial

Dive Into Summer: Mozambique Ruby, Madagascar Sapphire, and Black Nephrite from China, Plus an Opal Inclusions Chart

Duncan Pay, Editor-in-Chief

An overview of the Summer 2019 Gems & Gemology content.
 

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Articles (6)

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Regular Features

Lab notes

Lab Notes

The latest advances and findings from GIA laboratories.

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Micro-World

An in-depth look at the hidden world of gem inclusions.

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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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Diamonds From the Deep

Explores the role of diamonds in our understanding of the natural world.

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Book Review

Reviews

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

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THE DR. EDWARD J. GÜBELIN

MOST VALUABLE ARTICLE AWARD

Gemological Characteristics of Sapphires from Yogo Gulch, Montana
Nathan D. Renfro, Aaron C. Palke, and Richard B. Berg

Natural-Color Green Diamonds: A Beautiful Conundrum
Christopher M. Breeding, Sally Eaton-Magaña, and James E. Shigley