For the first time, the Carlsbad and New York labs see natural sapphire seeds with synthetic ruby overgrowth.
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GIA examines a multi-elemental diffused and melt-grown synthetic sapphire for the first time.
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A sapphire with a colour not commonly seen in the lab is found to have a glass filling.
Read MoreThis section, from the Fall 2011 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
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G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.
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This section, from the Winter 2009 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Spring 1994 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Spring 1987 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Summer 1992 issue of Gems & Gemmology, is a compilation of interesting finds from GIA's laboratories.
Read MoreThis section, from the Winter 1990 issue of Gems & Gemmology, is a compilation of interesting finds from GIA's laboratories.
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