Summarises data collected on more than 15,000 natural blue/grey/violet diamonds examined by GIA during the last decade and examines the mechanisms that produce this colour range.
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Characterises the akoya cultured pearls produced on the eastern shoreline of Australia using native Pinctada imbricata fucata molluscs.
Read MoreCompares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.
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Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular and Resorbed), that formed in a super-deep environment.
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Describes the occurrence of iridescence, and the role of differential etching, in quartz crystals from India’s Jalgaon District.
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Presents spectroscopic and phosphorescence data of the Blue Moon, a 12.03 ct Fancy Vivid blue diamond discovered at the historic Cullinan mine in early 2014.
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Examines the internal structure, chemical composition and spectroscopic features of 22 pen pearls.
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A simple chart of optical defects in diamond, including those that produce colouration and fluorescence colours.
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An examination of the gemmological and spectroscopic properties of CVD synthetic diamonds from Gemesis Corp.
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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.
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