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

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

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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