Research Article Search Results

Rare Natural Bicolor Diamond

A tapered baguette-cut diamond exhibits two major color zones.

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Slovak Opal: A New Life for a Historical Gem

Reports on the recent production of precious and common opal from a centuries-old locality.

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Gems Recovered from Sedimentary Rocks

Explores the formation of sedimentary rocks, gems found and formed in sedimentary environments, and the alluvial mining of these gems.

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Topaz from Mason County, Texas

A comprehensive look at Texas topaz, detailing its gemological and compositional characteristics and providing a basis for using trace element concentrations to identify its origin.

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Micro-Features of Beryl

Provides a visual guide to the internal features of different varieties of beryl.

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A Unique Petrified Tree Fern from Northeast China

Documents the gemological properties, chemical composition, and appearance of petrified tree fern discovered in northeast China.

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Texas Topaz, Slovak Opal, a Beryl Inclusions Chart, and More

An overview of the Winter 2023 Gems & Gemology content.

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Bohemian Garnets as Decorative Materials for Glass Vessels from the Late Sixteenth to Early Eighteenth Centuries

Examines a technique for setting cut garnets on glass objects, invented by Claudius vom Creutz of Nuremberg in the late sixteenth century.

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Turquoise United Conference 2023

A recap of the second annual Turquoise United Conference.

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Chicago Responsible Jewelry Conference

A report on the seventh annual Chicago Responsible Jewelry Conference.

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Translucent Ruby Filled with Zinc Glass

Examination of a heart-shaped ruby reveals a zinc glass filler.

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Large Stellate Dislocation in Spinel

A greenish blue spinel displays a large network of needle-like dislocations clustered in a six-rayed star pattern.

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