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Gemstones

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Optimising Face-Up Appearance in Coloured Gemstone Faceting

Al Gilbertson, July 24, 2013

How contrast patterns can increase perceived brightness and optimise a gemstone's appearance.

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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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