This article takes a look at the rough opal that plays a major role in the Adam Sandler film “Uncut Gems”. What is the real gemmology of opals?
Read MoreThese red, pink and orange hued gems evoke passion and excitement – and are sure-fire accessories for sultry summer days.
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Chatoyancy, rarely seen in play-of-colour opal, is observed in Ethiopian material.
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Lightning Ridge is the world capital of fine black opals, the most desired of all opals. In June 2015 a group of GIA field gemmologists visited this legendary town in New South Wales, Australia. Come with us to explore this important source of fine opals.
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Boulder opal in sandstone matrix is seen as beads in Tucson.
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A summary of the content found in the Summer 2016 issue of Gems & Gemology.
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G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.
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Review of Exotic Gems, Vol. 3: How to Identify, Evaluate, Select and Care for Matrix Opal, Fire Agate, Blue Chalcedony, Rubellite Indicolite, Paraíba and Other Tourmalines, by Renee Newman.
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An opal featuring a rare six-rayed star is examined in GIA's Bangkok lab.
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