This article provides a brief overview of the properties of CVD-grown synthetic diamonds.
Read MoreAn emerald deposit in southern Norway yielded significant quantities of crystals and gem rough in the late 19th and early 20th centuries.
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In 2006, emeralds were discovered in the Fazenda Bonfim region of north-eastern Brazil.
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The filling of surface-reaching breaks in emeralds is a relatively common practice, for which various kinds of oils and a natural resin have historically been used.
Read MoreCompares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.
Read MoreThis section, from the Summer 1993 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreFrom the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
Read MoreMananjary emeralds usually can be separated from emeralds from other localities by means of associations of certain mineral inclusions.
Read MoreThis section, from the Summer 1981 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThe technique is nondestructive and, with Fourier transform instrumentation, extremely rapid in comparison to most laboratory methods.
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