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A yellowish green specimen with horsetail-like inclusions is found to be glass rather than demantoid garnet.
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G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.
Read MoreFrom the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
Read MoreLow levels of radioactivity were found in some greenish yellow to yellow-green (peridot-like) synthetic spinel-and-glass triplets, mirror-backed glass rhinestone chatons and fully fashioned glass rhinestones.
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Similarities between natural spinels - with intense blue colour - and synthetic material, have led to difficulties in the recognition of the natural stones by traditional methods.
Read MoreThis article, from the Autumn 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.
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It is a rare occurrence when a diamond simulant submitted to a GIA laboratory turns out to be a natural gemstone.
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