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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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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 surefire accessories for sultry summer days.

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Liddicoatite Tourmaline from Anjanabonoina, Madagascar

Liddicoatite, a calcium-rich lithium tourmaline, was recognized as a separate mineral species in 1977, and named in honor of Richard T. Liddicoat.

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Tourmaline
Article
Tourmaline History and Lore

Somewhere in Brazil in the 1500s, a Spanish conquistador washed the dirt from a green tourmaline crystal and confused the vibrant gem with emerald. His confusion lived on until scientists recognized tourmaline as a distinct mineral species in the 1800s.

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And Then Came the Fantasy Cut

Once upon a time, gem cutting was a strict craft bound by centuries of tradition. Then Bernd Munsteiner (b. 1943) invented the fantasy cut.

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An Update on “Paraíba” Tourmaline from Brazil

“Paraíba” tourmalines, continue to be recovered in small amounts from northeastern Brazil.

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Mt. Mica: A Renaissance in Maine’s Gem Tourmaline Production

The Mt. Mica area in southwestern Maine has been mined for tourmaline and other pegmatite gems since the 1820s.

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Multicolored Bismuth-bearing Tourmaline from Lundazi, Zambia

Tourmalines from an alluvial deposit near Lundazi in Zambia consist of color zoned pink/colorless/yellow-green “watermelon” nodules.

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Copper and Tenorite Inclusions in Cuprian-Elbaite Tourmaline from Paraíba, Brazil

Inclusions of native copper and tenorite (CuO) were found in grayish green elbaite from São José da Batalha, Paraíba, Brazil.

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Gem-Quality Cuprian-Elbaite Tourmalines from São José Da Batalha, Paraíba, Brazil

Unusually vivid tourmalines from the state of Paraiba, in north eastern Brazil, have attracted great interest since they first appeared on the international gem market in 1989.

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