G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.
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The Stayish mine in Ethiopia’s Wollo province has been producing black opal since 2013.
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An investigation of a coated fire opal recently found in the Chinese market.
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Matrix opal from Andamooka, in South Australia, is a precious opal-included porous rock that is commonly colour enhanced (carbon impregnated) to imitate the highly prized black opal from Lightning Ridge in northern New South Wales, Australia.
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This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
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This article, from the Summer 2010 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside Gems & Gemology.
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Gem Testing lab in Jaipur, India recently examined a white-brown, translucent to opaque oval cabochon that turned out to be a composite featuring an unusual combination of gem materials.
Read MoreTwenty-two gem opals from a new volcanic deposit located near Bemia
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