Summer 2023 - Volume 59, Issue 2

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the quarterly journal of the gemological institute of america


Nickel-Diffused Spinel, Vietnamese Augite, Brown Mammoth Ivory, and More…

Duncan Pay, Editor-in-Chief

An overview of the Summer 2023 Gems & Gemology content.

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Articles (3)

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Regular Features

Lab Notes

Lab Notes

The latest advances and findings from GIA laboratories.

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Summer 2023 Micro-World Banner


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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Colored Stones Unearthed

Colored Stones Unearthed

Explores the geological concepts related to colored stone formation.

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In the Spotlight

In the Spotlight

A look at a rare volcanic glass from central Oregon with lapidary artist Tom Dodge.

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Most Valuable Article Awards