Research Article Search Results

Engagement Rings through the Ages

The engagement ring’s romantic traditions resonate throughout time. The Romans first introduced the betrothal ring as a plain, iron hoop.

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Emerald Quality Factors

Learn about the factors that make emerald so desirable.

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GIA's Gübelin Gem Project: Various Gems, Danburite – Humite

Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

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Book Review: From a Snowflake to an Iceberg: The McFerrin Collection

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Agates from Morocco: Gemological Characteristics and Proposed Origin

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A Solution to Diamond Color Grading Problems

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Winter 2010 Gem News International

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Winter 2012 Gem News International

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Winter 2009 Gem News International

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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Winter 2011 G&G Lab Notes

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Freshwater Pearls, Blister and Loose, with Their Host Shells

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Filled Pearl with Surface Features

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