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G-G Spring 2015
Article
Spring 2015 G&G Examines Blue Spinel, Chinese Jewellery Design and the Latest in Synthetics

G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.

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Spectral Line Book
Book Review: Handbook of Spectral Lines in Diamond, Volume 1: Tables and Interpretations

By Bernhard Dischler, 467 pp., publ. by Springer-Verlag Berlin and Heidelberg GmbH & Co., Berlin; New York, 2012, US $120

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151464
Fluorescence produced by optical defects in diamond: measurement, characterisation and challenges

How variations in UV lamp output can affect observed fluorescence colour and intensity.

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Coloured Diamonds in the Aurora Butterfly of Peace Collection
The “Type” Classification System of Diamonds and Its Importance in Gemmology

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.

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