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Color zoning in amethyst from Boudi, Morocco
Amethyst from Boudi, Morocco

An introduction to Moroccan amethyst, which features distinctive color zoning and inclusions.

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Karyna Sena stands in front of a sapphire mine near Colombo, Sri Lanka.
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Designer’s Love of Brazil – and its Gems – Shines in Every Piece She Creates

Karyna Sena, a third-generation gem and jewelry professional, infuses the rich tapestry of Brazil – and her joie de vivre – in each of her designs.

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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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Amethyst from Four Peaks, Arizona

For more than a century, the Four Peaks mine in Maricopa County, Arizona, has produced gem-quality amethyst.

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Amethyst Mining in Brazil

Brazil is currently the leader in overall production of amethyst.

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A Status Report on Gemstones from Afghanistan

An overview of the plentiful and various gem materials being discovered and produced in Afghanistan.

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Abstracts; Fall 1991

This article, from the Fall 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.

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Abstracts; Summer 1991

From the Summer 1991 issue of Gems & Gemology, a summary of important gemology-related articles published in other journals.

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