Opal Gemstone | Opal Stone

Report Check
Submit A Gem
LIST YOUR STORE
GIA Store
My GIA

◂ BACK TO GEM ENCYCLOPEDIA

Opal

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

See Gem As

Tools

Research

Winter 1990 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 1991 Gem News International

Winter 1999 Gem News International

Winter 2001 Gem News International

Winter 2011 G&G Lab Notes

This section, from the Winter 2011 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

Fall 1988 Gem News International

Fall 1988 G&G; Lab Notes

This section, from the Fall 1988 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

Summer 1987 G&G; Lab Notes

This section, from the Summer 1987 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

Summer 1989 Gem News International

Winter 2011 Gem News International

Summer 1998 Gem News International

Winter 2005 Gem News International

PreviousPage 8 of 15Next

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