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Man in a hard hat sits in an underground emerald mine.
Article
Geologist’s Newest Mission: Share the Love of Colored Gemstones

African-born colored stone specialist visits America and changes his life forever; finding love, earning GG and starting a new career.

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G&G Spring 2018 Cover
Article
Spring 2018 G&G: Color Origin of Green Diamonds, Iridescence in Hematite, and the Outlook from Tucson

A summary of the Spring 2018 issue of Gems & Gemology.

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Natural blister in the form of a pearlfish.
Natural Blister from Entombment of a Pearlfish Within a Pinctada Maxima Shell

A blister in a P. maxima shell, formed when the mollusk's nacre covered a trapped pearlfish, preserves the fish in stunning detail.

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Pierre Cartigny delivers a presentation at the IDS.
Fourth International Diamond School

A report from the fourth International Diamond School, held in January 2018 in Brixen-Bressanone, Italy.

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Phenakite with beryl and yellow phenakite.
Color Origin of Phenakites from the Ural Emerald Mines

An investigation into jewelry-grade phenakite from Russia.

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GIA Museum display on liddicoatite tourmaline at the 2018 Tucson Gem and Mineral Show.
Zoning In on Liddicoatite Exhibit

An exhibit at the Tucson Gem and Mineral Show dedicated to former GIA president Richard T. Liddicoat (1918–2002).

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Gerd Dreher (1939-2018)

An obituary for gem carving master Gerd Dreher.

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Loose and mounted green diamonds.
Exhibition Review: Green Diamonds: Natural Radiance

Review of Green Diamonds: Natural Radiance at the Natural History Museum of Los Angeles.

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Opal from Shewa, Ethiopia shows agate-like banding.
Opal with Agate-Like Banding

An orangy brown opal from Ethiopia displays a small patch of wavy "varve" banding, unusual for this type of gem.

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Night sky inclusion scene in Burmese star sapphire.
Six-Rayed Star in Sapphire from Myanmar

A Burmese sapphire shows a celestial scene both externally and internally.

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