

The New York laboratory reports on a new record size for CVD laboratory-grown diamond.
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Davemaoite identified in a diamond from Orapa, Botswana.
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Tiny hematite crystal inclusions identified along two fractures in natural diamond.
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The first installment of this column explores the potential role of modern-day deep-focus earthquakes on diamond growth.
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GIA’s New York laboratory reports on a 15.10 ct (17.47 × 11.53 × 7.94 mm) Fancy Vivid blue cut-cornered rectangular step cut named the De Beers Cullinan Blue diamond.
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GIA’s New York laboratory reports a new record size for CVD laboratory-grown diamond.
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Using customized, image-based measurement systems to quantify the effect of fluorescence on the color, brightness, and transparency of gem diamonds viewed in both face-up and table-down orientations.
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Diamond ages offer insight into continent evolution spanning billions of years.
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Chronicles important auctions of jewels from European royal collections over the years, with a focus on a recent high-profile sale of items that once belonged to Marie Antoinette.
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