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Ametrine
This transparent quartz has colors of both amethyst and citrine, and is called ametrine or amethyst-citrine.
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Exhibition Review: Gemstone Carvings: The Masterworks of Harold Van Pelt
A review of Gemstone Carvings: The Masterworks of Harold Van Pelt at the Bowers Museum in Santa Ana, California.
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Ametrine Optical Dishes: Windows into the Effects of Crystal Structure
Optical activity is studied using a polished block of ametrine.
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Article
Designer’s Love of Brazil – and its Gems – Shines in Every Piece She Creates
Karyna Sena, a third-generation gem and jewelry professional, infuses the rich tapestry of Brazil – and her joie de vivre – in each of her designs.
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Article
Positive Design With Negative Space
Sometimes what you don’t see is as important as what you do. “Negative space” is the explanation to this curious statement.
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Article
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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Using Conventional Equipment to Separate Natural from Synthetic Ametrine
A summary of the article “A simple approach to separate natural from synthetic ametrine,” by Francine Payette.
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Update on Ametrine from the Yuruty Mine, Bolivia
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
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Anahí’s “New” Ametrine
The Anahí mine in southeastern Bolivia has enjoyed consistent production since 1990 and is best known for its ametrine.
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Ametrine with Layers of Smoky Quartz
An investigation of these Yuruty mine samples revealed an interesting new aspect to this bicolored quartz.
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Russian Synthetic Ametrine
Gem-quality synthetic ametrine has been produced commercially in Russia since 1994.
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