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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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Research
Dyed Bone as a Red Coral Imitation
A specimen presenting as red coral is revealed to be dyed bone.
Shattuckite from the DRC
Rare shattuckite from the Democratic Republic of Congo, as seen at the Tucson Gem and Mineral Show.
Fall 1987 G&G; Lab Notes
Fall 1988 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Fall 1993 G&G; Lab Notes
This section, from the Fall 1993 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Fall 1994 G&G; Lab Notes
This section, from the Fall 1994 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Fall 1995 Gem News International
Fall 1995 G&G; Lab Notes
Fall 1996 G&G; Lab Notes
Spring 1993 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Winter 1983 G&G; Lab Notes
This section, from the Winter 1983 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
