Examination of samples of faceted "Ocean green" topaz reveals that this material has been irradiated in a nuclear reactor.
Read MoreFrom the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
Read MoreThis section, from the Summer 1987 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Summer 1985 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreAn overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.
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This section, from the Summer 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis article presents, for the first time, both gemmological and geologic information on topaz, aquamarine and other beryls from miarolitic pegmatites at Namibia’s historic Klein Spitzkoppe mineral locality.
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A topaz hosting a group of inclusions is examined in the Carlsbad lab.
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Review of Geology of Gem Deposits, Second Edition, by L.A. Groat.
Read MoreA compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewellery manufacturing techniques and industry trends.
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