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Jade
“Jade” is a generic term for nephrite, jadeite, and under certain conditions green omphacite. In China, a pierced jade disk is a symbol of heaven.
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Jade Care and Cleaning Guide
Learn about jade's durability and how to care for your jade jewelry.
Abstracts; Summer 1991
From the Summer 1991 issue of Gems & Gemology, a summary of important gemology-related articles published in other journals.
Summer 1981 G&G Lab Notes
This section, from the Summer 1981 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Summer 1982 G&G; Lab Notes
Summer 1983 G&G Lab Notes
This section, from the Summer 1983 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Summer 1984 G&G; Lab Notes
Spring 2010 G&G Lab Notes
This section, from the Spring 2010 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.
Spring 2011 G&G; Lab Notes
Abstracts; Summer 2009
This article, from the Summer 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Japanese Jadeite Tables
Examines the sources, color, texture, and chemical composition of jadeite from Japanese deposits.
