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Summer 1987 G&G Lab Notes

June 1, 1987

This section, from the Summer 1987 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

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Summer 1985 G&G Lab Notes

June 1, 1985

This section, from the Summer 1985 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

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Metmict Zircon
Summer 1991 G&G Lab Notes

June 1, 1991

This section, from the Summer 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

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The internal structures of natural pearls from the marine mollusk Pinctada maxima are the subject of the lead article in this issue. The scattered loose pearls on the cover are from Paspaley’s natural pearl collection, which includes one discovered in the 1970s at the Eighty Mile Beach fishing grounds
G&G Spring 2021 Edition
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