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FTIR spectrum and DiamondView images of type Ib-IaA diamond
Diamond Geology

Poster abstracts on “Diamond Geology” from GIA’s 2018 International Gemological Symposium.

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Inclusion features in Zimmi diamonds
Diamond Geology

Abstracts of speaker presentations from the “Diamond Geology” session of GIA’s 2018 International Gemological Symposium.

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Recent Advances in Understanding the Geology of Diamonds

Examines the last two decades’ advances in analyzing and understanding the formation of natural diamonds, and their relation to the earth’s formation.

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“Candelabra” Necklace
The Rock Hound: Muzo Emeralds and Ethical Practices

Susi Smither discusses her sustainable, responsible, and ethically based business practices.

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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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Grandics, wearing black-framed glasses, is behind a bouquet of point-shaped molds.
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Emerging Designer Wins Grant to Create Ethical Brand

Designer’s frequent world travels laid a foundation of creative experimentation, design inspiration and social responsibility.

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Sustainably mined yellow sapphire with a transparent chain of custody.
Ethical and Sustainable Vertical Integration in the Sapphire Market

The recession of 2008 transforms a gem business into a vertically integrated operation.

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Geology: A Very Short Introduction
Book Review: Geology: A Very Short Introduction

Review of Geology: A Very Short Introduction by Jan Zalasiewicz.

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Fancy-color diamonds from Lomonosov, Russia.
Geology and Development of the Lomonosov Deposit, Northwestern Russia

Reviews diamond discoveries at the Lomonosov deposit, as well as the geology of the Arkhangelsk kimberlite province.

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Books: Geology of Gem Deposits, Second Edition
Books: Geology of Gem Deposits, Second Edition

Review of Geology of Gem Deposits, Second Edition, by L.A. Groat.

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