Provides a visual guide to the internal features of natural, synthetic and treated rubies.
Read MoreExamines 85 saltwater natural pearls, reportedly harvested from the Caribbean islands off the coast of Venezuela during the early 16th century, to determine their age.
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Details the process used by Wiede’s Carbidwerk to produce star synthetic corundum from the mid-1950s until the 1970s.
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Presents the gemmological and spectroscopic properties of a suite of synthetic diamonds grown by AOTC using high pressure and high temperature.
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An examination of the gemmological and spectroscopic properties of CVD synthetic diamonds from Gemesis Corp.
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A survey of recent advances in CVD synthetic diamond quality.
Read MoreAn examination of synthetics in the marketplace over the first decade of the 2000s.
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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.
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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 MoreHigh-quality CVD-grown diamonds, comparable in colour and clarity to natural diamonds, can be identified using a combination of gemmological and spectroscopic properties.
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