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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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Golden Yellow

Golden shades of citrine glow in the heart of this gem.

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Lovely Purple

Shades of amethyst’s purple contrast with citrine’s orangy yellow.

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Blended shades

Reflections from the back facets blend into sunset colors in this rectangular cut.

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Bicolor

This quartz crystal shows both amethyst and citrine colors.

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Top Quality

This facet grade rough piece will produce a superb cut gem.

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Rare

With only one producing source, the supply of ametrine is very limited.

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Tools

Research

Faceted quartz egg.
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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Bolivian ametrine crystal.
Ametrine Optical Dishes: Windows into the Effects of Crystal Structure

Optical activity is studied using a polished block of ametrine.

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Karyna Sena stands in front of a sapphire mine near Colombo, Sri Lanka.
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
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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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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A Selection of Faceted Natural Ametrines.
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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Ametrine from Yuruty, Bolivia
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 mine tunnel
Anahí’s “New” Ametrine

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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Smoky Quartz Ametrine from the Yuruty Mine
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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Faceted Synthetic Ametrines
Russian Synthetic Ametrine

Gem-quality synthetic ametrine has been produced commercially in Russia since 1994.

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