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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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Research
A Useful Technique to Confirm the Hydrophane Nature of Opal
Observing a water drop’s interaction with opal, as well as refractive index, can confirm a specimen’s hydrophane nature with less risk of breakage than total immersion.
Winter 2012 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.
Fall 2012 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.
Dyed Purple Hydrophane Opal
Opals with an unusual purple bodycolor and strong play-of-color have recently appeared in the market.
Play-of-Color Opal from Wegel Tena, Wollo Province, Ethiopia
A new opal deposit was discovered in 2008 near the village of Wegel Tena, in volcanic rocks of Ethiopia’s Wollo Province.
Fall 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.
Spring 2000 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.
Synthetic or Imitation? An Investigation of the Products of Kyocera Corporation That Show Play-Of-Color
An investigation of the difference between synthetic opal and opal simulant.
Opal from the Shewa Province, Ethiopia
Opal occurs as nodules in volcanic rocks at a new gem opal locality in the Menz Gishe district of Shewa Province, Ethiopia.
Queensland Boulder Opal
After almost 75 years of inactivity, the deposits of boulder opal in Queensland, Australia, began to attract new interest in the 1960s and 1970s.
"Opalite": Plastic Imitation Opal with True Play-Of-Color
A plastic imitation opal that shows true play-of-color was advertised as
