◂ BACK TO GEM ENCYCLOPEDIA

Opal

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

Opal
See Gem As

Research

The Real Gemology of Ethiopian Opals in ‘Uncut Gems’

Taking a look at the rough opal that plays a major role in the Adam Sandler film “Uncut Gems.” What is the real gemology and source information of opals?

Read more

The Enigmatic Gemstone: Opal’s Playful Dance with Light

A lyrical dance of bold, broad flashes of color or smaller, quicksteps of pinpoint flashes.

Read more

Inclusions in Natural, Treated, Synthetic, and Imitation Opal

Provides a visual guide to the internal features of natural, treated, synthetic, and imitation opal.

Read more

Land of Origins: A Gemological Expedition to Ethiopia

Documents a visit to the sapphire, opal, and emerald mining and trading areas of Ethiopia.

Read more

Opal from West Java, Indonesia

At the AGTA show, Rare Earth Mining Co. (Trumbull, Connecticut) displayed an unexpected material: Indonesian opal reportedly from West Java.

Read more

Outlook on Opals from Mexico and Australia

Jürgen Schütz discussed the opal sourcing and cutting activities of the German firm Emil Weis.

Read more

Update on Dyed Hydrophane Opal

Opal purportedly from a new deposit is found to be dyed.

Read more

New Designs from Paula Crevoshay

World-renowned jewelry artist Paula Crevoshay displays some of her newest pieces at the Tucson gem shows.

Read more

Golden Rutilated Quartz Artisanal Mining Community

Plans to develop a collective in a remote Brazilian rutilated quartz mining community are unveiled.

Read more

Flashes and Flames in Ethiopian Opal

Chatoyancy, rarely seen in play-of-color opal, is observed in Ethiopian material.

Read more

“Boldly Go” with a Southwest-Inspired Starship Enterprise

Read more

‘Hippie’ Designer-Appraiser Follows Her Heart, Re-ignites Local Alumni Chapter

Rebecca Buys, GG, with a fulfilling career as a designer and appraiser, guides GIA alumni opportunities in San Diego, California.

Read more

PreviousPage 2 of 6Next
YMAL AJP
AJP®: New 5-Day Program Offered Worldwide
Learn About NextGem
GIA NextGem™ Diamond Training for Retail
Explore GIA Laboratory Promotional Offers
Explore GIA Laboratory Promotional Offers
Shop the GIA Store
Shop the GIA Store