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Aquamarine from San Luis Potosí State in northern Mexico
Aquamarine from a New Primary Deposit in Mexico

Mikhail Ostrooumov, November 7, 2016

Examination of aquamarine samples from a new primary deposit in San Luis Potosí, northern Mexico.

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Ancient Tourmaline and Beryl from Afghanistan

Jaroslav Hyršl, Prague, Czech Republic, July 2, 2013

Examination of a large private collection of beads and carvings from antique excavations, assembled in the 1970s by a collector in Afghanistan.

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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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