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187.66 “cape” diamond from the Diavik mine
Examination of the Largest Canadian Diamond

GIA examines a 187.66 ct pale yellow diamond from Diavik, the largest rough diamond ever found in Canada.

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Spring 2015 G&G Examines Blue Spinel, Chinese Jewelry Design and the Latest in Synthetics

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

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Gem Mountain mining site
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Update on Rock Creek Sapphire Deposit

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

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