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A multi-diamond brooch.
Article
2019 in Review: Diamond Trade Begins Recovery, Jewellery Retail Sector Blooms Late and Extraordinary Auction Sales

2019: A year of ups and downs in the gem and jewellery industry, including diamonds, retail, auction sales and laboratory-grown diamonds.

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A yellowish green glass with numerous wollastonite needles similar in appearance to the horsetail inclusions in demantoids.
Wollastonite in Devitrified Glass Imitating Horsetail Inclusions in Demantoid Garnet

A yellowish green specimen with horsetail-like inclusions is found to be glass rather than demantoid garnet.

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Six-rayed star in an untreated spinel.
Star Spinel with Four and Six Rays

A cabochon displaying asterism is found to be an untreated spinel with two different stars.

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Three-Sided Phantom in Quartz
Quarterly Crystal: Wurtzite Phantom in Quartz

For the first time, wurtzite is found as an inclusion in gem material.

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The gems spell out “The 2000th Gem Stone Design.”
Article
Gemstone ‘Paintings’ Tell Story of a Master Craftsman, Gem and Jewellery Mentor

A jeweller who quietly built up a circle of inspiration and influence lives on in generations of GIA-educated jewellers and gemmologists.

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Starlet in sunglasses above title “Hooray for Hollywood
Article
M.D. Hohenstine’s Gem Displays: The Process of Creating Popular Window Art with Loose Gemstones

Jeweler M.D. Hohenstine’s spectacular window displays were a beloved tradition in downtown Columbus, Ohio, for more than 50 years.

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A round, bright red gem displayed on a dark gray background.
Article
The Red Hot Gems of Summer

These red, pink and orange hued gems evoke passion and excitement – and are sure-fire accessories for sultry summer days.

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Spinel suites in a range of hues.
Fine Gems and Update from Myanmar

A look at top-quality gems and insight into a delegation’s visit to gem mines in Myanmar.

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Multi-colored gems are superimposed on an image of glacier peaks.
Article
Gems and Minerals from the Sub-Arctic

Circumnavigate the boreal reaches of the globe to explore gems from polar regions.

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Greenish yellow doublets.
Synthetic Sapphire and Synthetic Spinel Doublets

Unusual doublets created from two different synthetics are revealed at the Carlsbad laboratory.

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