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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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Brazilian Diamonds: A Historical and Recent Perspective

Recounts the history, geology, and notable localities of diamond mining in Brazil, and outlines plans for future diamond production.

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Diamonds in Canada

This article chronicles the discovery of primary diamond deposits throughout Canada, whose increasing supply of rough stones will have a growing impact on the world diamond industry.

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Mining Diamonds in the Canadian Arctic: The Diavik Mine

Located near the Arctic Circle, Diavik is one of the world’s richest diamond deposits and a leader in sustainable mining.

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Gem Localities of the 1990s

The 1990s saw growth in gem exploration, production, and marketing worldwide.

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Update on Ammolite Production from Southern Alberta, Canada

There have been a number of changes in Ammolite production from southern Alberta, Canada, since 2001.

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Mining site at Zahamena National Park, Madagascar
The Color of Responsibility: Ethical Issues and Solutions in Colored Gemstones

Examines the challenges of ethical sourcing and production of colored stones, and what some industry leaders are doing to address the situation.

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8.5 ct Aquamarine Cabochon
Aquamarine from the Masino-Bregaglia Massif, Central Alps, Italy

Aquamarine from granitic pegmatites of the Masino-Bregaglia Massif, Central Alps, Italy.

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Ruby and Sapphire Production and Distribution: A Quarter Century of Change
Ruby and Sapphire Production and Distribution: A Quarter Century of Change

During the past 25 years, the corundum market has been transformed from one of medium to high-priced gems to one that encompasses nearly all price ranges.

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Emeralds
Emeralds from the Fazenda Bonfim Region, Rio Grande do Norte, Brazil

In 2006, emeralds were discovered in the Fazenda Bonfim region of northeastern Brazil.

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