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Article
Gem Mining in Cambodia

Vincent Pardieu, GIA, August 9, 2013

How to examine a sapphire crystal for cracks and inclusions.

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Abstract Header from the 2009 issue of Gems & Gemology
Abstracts; Winter 2009

Brendan M. Laurs, Thomas W. Overton

This article, from the Winter 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.

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Sri Lanka: The Gem Island

Peter C. Zwaan, June 1, 1982

An overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.

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