Australia is the most famous source of opals in the world. The black opals from Lightning Ridge are the most valuable opals ever produced. Journey with us on this expedition to the Australian outback to see how these rugged individuals mine opals and why they chase the rainbow of colour.
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Documents a trip to the renowned opal fields of Lightning Ridge, Koroit, Yowah and Quilpie.
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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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A summary of the content found in the Summer 2016 issue of Gems & Gemology.
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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 is becoming more and more popular. Australia’s central Queensland is home to more than a dozen of sources of this stone. Come with GIA field gemmologists to find out more about this unique gem.
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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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The Stayish mine in Ethiopia’s Wollo province has been producing black opal since 2013.
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This article, from the Winter 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Read MoreThis article, from the Winter 1991 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
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