Vincent Pardieu, GIA, August 9, 2013
How to examine a sapphire crystal for cracks and inclusions.
Read MoreBrendan 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.
Read MorePeter 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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