Turquoise
Azure sky, robin’s egg blue: Vivid shades of turquoise define the color that’s named after this gem.


“Wulanhua” turquoise bracelet identified as composite material made of barite, calcite, and blue dye.
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Reports on the geology, background, and current state of mining and production at Iran’s largest turquoise mine.
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Presents spectroscopic and chemical analysis of a new variety of turquoise with a rare raindrop pattern with saturated colors.
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Explore GIA’s collection of free, rare digital books and manuscripts that document the history of gems and jewelry.
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Arizona’s scenic desert and mountain landscape is the perfect backdrop for a modern Wild West road trip in search of gem and mineral treasures.
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A report on turquoise from the only known U.S. deposit outside of the Southwest.
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A jeweler who quietly built a circle of inspiration and influence lives on in generations of GIA-educated jewelers and gemologists.
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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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Plans to develop a collective in a remote Brazilian rutilated quartz mining community are unveiled.
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An eye-catching replica from a cult TV favorite is found in Tucson.
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