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Alexandrite cabochon in fluorescent (left) and incandescent light (right).
Cat’s-Eye Alexandrite with Unique Inclusion Pattern

Examination of a chatoyant alexandrite cabochon.

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Copper-bearing tourmaline acquired on the secondary market.
Importance of the Secondary Market for Fine Gems

Exceptional gems that are recirculated in the gem market make an impact at the Tucson shows.

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Article
GIA Gem Project
Various Gems (Barite - Cuprite)

Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

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Spring 2004 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.

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Summer 2004 G&G Lab Notes

This section, from the Summer 2004 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Winter 2002 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.

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Spring 1999 G&G Lab Notes

This section, from the Spring 1999 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Fall 2005 G&G Lab Notes

This section, from the Fall 2005 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Fall 1995 G&G Lab Notes

This section, from the Fall 1995 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Spring 1995 G&G Lab Notes

This section, from the Spring 1995 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.

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