A cape diamond examined in the New York lab shows rare yellow phosphorescence.
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The decay of the transient 2800 cm–1 absorption peak in a Fancy grey diamond is observed.
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A natural Fancy Intense blue diamond submitted to the New York lab shows the highest boron concentration ever reported in a natural specimen.
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G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.
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 2011 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
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This section, from the Summer 2010 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
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This section, from the Winter 2010 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Spring 2010 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.
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This section, from the Winter 2009 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
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