Alexandrite Gemstone | Natural Alexandrite Stone

Alexandrite

Green in sunlight. Red in lamplight. Color-changing alexandrite is nature’s magic trick.

See Gem As

Tools

Research

Fall 1992 G&G Lab Notes

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

Summer 1982 G&G; Lab Notes

Summer 1987 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.

Summer 1988 Gem News International

Bicolor Chrysoberyl with Chrysoberyl and Alexandrite Zones

The Tokyo laboratory reports on a submitted stone composed of both chrysoberyl and alexandrite.

Spring 1986 G&G Lab Notes

This section, from the Spring 1986 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

Spring 1987 Gem News International

Spring 1988 Gem News International

Spring 1988 G&G; Lab Notes

Spring 1991 Gem News International

Spring 1992 Gem News International

Spring 1993 G&G Lab Notes

This section, from the Spring 1993 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

PreviousPage 4 of 5Next

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