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Opal

Fireworks. Jellyfish. Galaxies. Lightning. Opal's shifting play of kaleidoscopic colors is unlike any other gem.

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Spring 1991 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.

Opal from Querétaro, Mexico: Fluid Inclusion Study

The distinctive orange-to-red “fire

Spring 1998 Gem News International

Spring 1998 G&G; Lab Notes

Spring 1999 Gem News International

Winter 2006 Gem News International

Winter 1992 G&G; Lab Notes

This section, from the Winter 1992 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.

Winter 1993 Gem News International

Summer 1990 Gem News International

Summer 1992 Gem News International

Summer 1993 Gem News International

Summer 1995 Gem News International

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This Month's

Featured Gems

PERIDOT

Found in lava, meteorites, and deep in the earth’s mantle, yellow-green peridot is the extreme gem.

FANCY COLOR DIAMOND

Dazzling brilliance. Captivating color. These are the planet’s most valued gems.

DIAMOND

Diamonds are among nature’s most precious and beautiful creations.

EMERALD

Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.

CITRINE