A phenomenon usually seen in Colombian emeralds is found in a specimen from Zambia.
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An emerald with drill holes containing a resinous material is seen in the New York lab.
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An emerald with strong colour zoning along the pavilion facets demonstrates the importance of cutting and orientation in gem materials.
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A report on a 1.17 ct emerald obtained in Kabul, Afghanistan for GIA's permanent reference collection
Read MoreThis section, from the Summer 1994 issue of Gems & Gemmology, 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 Spring 2012 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Autumn 2008 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Winter 2007 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
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This section, from the Spring 2006 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
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