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<em>Gota de Aceite</em> in an emerald from Zambia.
Gota de Aceite in a Zambian Emerald

A phenomenon usually seen in Colombian emeralds is found in a specimen from Zambia.

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Spring 2012 G&G Lab Notes

This section, from the Spring 2012 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Summer 1993 G&G Lab Notes

This section, from the Summer 1993 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

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Winter 1996 G&G Lab Notes

This section, from the Winter 1996 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

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Autumn 1995 G&G Lab Notes

This section, from the Autumn 1995 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Summer 1992 G&G Lab Notes

This section, from the Summer 1992 issue of Gems & Gemmology, is a compilation of interesting finds from GIA's laboratories.

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Summer 1988 G&G Lab Notes

This section, from the Summer 1988 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

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Summer 1989 G&G Lab Notes

This section, from the Summer 1989 issue of Gems & Gemmology, is a compilation of interesting finds from GIA's laboratories.

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Spring 1984 G&G Lab Notes

This section, from the Spring 1984 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Spring 1981 G&G Lab Notes

This section, from the Spring 1981 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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