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Research & News
Feature Article
Blue Diamonds Have a Link to Ancient Oceans
This is an extended abstract of the article ‘Blue boron-bearing diamonds from Earth’s lower mantle,’ published in the 2018 August issue of Nature. GIA Researcher Evan Smith is the lead author of the article.
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Event
2018 GIA Symposium
Scientists and business leaders will gather at a summit of the gem and jewelry industry.
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Reviews
Exhibition Review: Green Diamonds: Natural Radiance
Review of Green Diamonds: Natural Radiance at the Natural History Museum of Los Angeles.
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Industry Analysis
Robust Demand Brings Increased Rough Diamond Sales
Demand for diamonds has been good so far this year. Rough sales have increased and large diamonds are being mined. Plus: Online sales tax changes.
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Lab Notes
Fancy Deep Brown-Orange CVD Synthetic Diamond
A CVD-grown diamond shows an unexpected treatment-caused color.
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Gem News International
Turquoise from Western Arkansas
A report on turquoise from the only known U.S. deposit outside of the Southwest.
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