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Gem Mountain mining site
Article
Update on the Rock Creek Sapphire Deposit

Warren Boyd, June 17, 2015

An overview of recently expanded sapphire production at the Gem Mountain mine near Philipsburg, Montana.

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G-G Spring 2015
Article
Spring 2015 G&G Examines Blue Spinel, Chinese Jewellery Design and the Latest in Synthetics

Russell Shor, June 12, 2015

G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.

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Autumn 2000 G&G Lab Notes

September 1, 2000

This section, from the Autumn 2000 issue of Gems & Gemology, 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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