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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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“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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Grandics, wearing black-framed glasses, is behind a bouquet of point-shaped molds.
Article
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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“Ethics of Jewelry” panelists at the Met.
"The Ethics of Jewelry" at MetFridays

A summary of “The Ethics of Jewelry” panel, held at New York’s Metropolitan Museum of Art on January 25, 2019.

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Fancy Color Diamond
Article
Fancy Color Diamond Description

Fancy color diamonds come in almost any color you can imagine. Red, green, purple, and orange are generally the most rare, followed by pink and blue. Yellows and browns are the most common fancy colors, but they’re generally less valuable than the rarer colors.

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Additional Colored Diamond Services

In addition to grading and identification, we offer an array of other services for colored diamonds.

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Colored Diamonds: A Colorful Anniversary

The GIA Colored Grading Diamond System is the method by which colored diamonds are graded. It’s been so successful, that GIA has been entrusted with grading virtually every important colored diamond that has gone to auction.

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Fancy Color Diamond
Article
Fancy Color Diamond Quality Factors

Learn about the factors that make fancy color diamonds so desirable.

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Fancy-colored Diamond
Article
Fancy Color Diamond History and Lore

While fancy color diamonds have traditionally been a small part of the diamond business, their popularity and availability have grown in the past several decades.

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