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Dark pink-purple spinel
Spinel Inclusion in Spinel

Examination of a pink-purple spinel revealed what appeared to be a spinel crystal inclusion.

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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.
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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Blue lazurite in a light gray spinel.
Lazurite in Spinel

A light gray spinel features a striking vibrant blue lazurite inclusion.

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Article
Spinel Journey

The Black Prince’s Ruby. The Timur Ruby. For centuries, spinel, the great imposter, masqueraded as ruby in Europe’s crown jewels

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Pink to Red Spinel Ring
Article
Spinel Description

The spinel used in jewelry is a small part of a group of minerals that share the same crystal structure. Not all of them form transparent crystals suitable for jewelry use, however. Spinel offers a range of hues, from orange to intense “stoplight” red, vibrant pink, and all shades of purple, blue, and violet through bluish green.

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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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Article
Distinguishing Heated Spinels from Unheated Natural Spinels and from Synthetic Spinels

While top-quality natural spinels have so far escaped large-scale treatment processes, some heat-treated goods are on the market. This report establishes the identifying criteria of heated spinels.

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