G&G Brief presents an overview of the content of the Summer 2015 issue of Gems & Gemology.
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G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.
Read MoreBy Dorothy McFerrin, publ. by the McFerrin Foundation, College Station, Texas, 2013, US $125 (£74)
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By Bernhard Dischler, 467 pp., publ. by Springer-Verlag Berlin and Heidelberg GmbH & Co., Berlin; New York, 2012, US $120
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How variations in UV lamp output can affect observed fluorescence colour and intensity.
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Pink CVD lab-grown products can be separated from natural and treated-colour natural pink diamonds by a combination of gemmological and spectroscopic properties, which are explored in this study.
Read MoreA recent study compares a specially created model of the Hope diamond with recent computer models of the French Blue to determine if other stones could have resulted from either recutting.
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This study uses both historical information and modern data to create a computer model of the Tavernier Blue, orienting the finished diamond within the original diamond crystal.
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Knowledge of type allows gemmologists to better evaluate if a diamond might be treated or synthetic, and whether it should be sent to a laboratory for testing.
Read MoreRussian-grown gem-quality synthetic diamonds are being sold for jewellery; this article presents the results of a gemmological examination of a group of yellow samples.
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