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Presents the underlying physics and methodology of this analytical technique, which has become an essential tool in identifying treated and synthetic diamonds.
Read MoreBy Dorothy McFerrin, publ. by the McFerrin Foundation, College Station, Texas, 2013, US $125 (£74)
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How variations in UV lamp output can affect observed fluorescence colour and intensity.
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A survey of recent advances in CVD synthetic diamond quality.
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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 MoreModern gemmologists and diamantaires are faced with a broad spectrum of colour and clarity treatments ranging from the simple to the highly sophisticated.
Read MoreEight decades after the Cullinan diamond was mined, a team of gemmologists examined the two famous gems that were created from it to become part of the Crown Jewels of England.
Read MoreIn the last decade, progress in diamond growth by chemical vapour deposition (CVD) has resulted in significant improvement in the quality of synthetic single crystals.
Read MoreA new chart, supplementing the one published in the Winter 1995 issue of Gems & Gemmology, summarises the features of both as-grown (“non-modified”) and treated (“modified”) synthetic diamonds currently in the gem market.
Read MoreA simplified form of X-ray topography can fingerprint faceted diamonds to aid in their recovery from loss or theft.
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