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 MoreHigh-quality synthetic diamonds created by the Gemesis Corp. are examined and their gemmological properties are explicated.
Read MoreDe Beers has produced a faceted synthetic gem-quality diamond that could go unrecognised without careful gemmological testing.
Read MoreSumitomo Electric Industries is producing gem-quality synthetic yellow diamonds in deep yellow single crystals in sizes up to 2 ct.
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This section, from the Spring 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreGreenish yellow to yellowish green HPHT-treated diamonds exhibited highly saturated body colour, well-defined brown to yellow octahedral graining and visual evidence of heating, among other characteristics.
Read MoreThis article compares some of Chatham Created Gems’ synthetic coloured diamonds to natural diamonds and explains the results.
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This article, from the Autumn 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.
Read MoreThis article, from the Autumn 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.
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