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Showing 20 results for "red beryl"
Red” Chrysoberyl versus Alexandrite: The Impact of Elevated Chromium Levels on Color and Color-Change Properties

Overview and commentary on the 2014 Journal of Gemmology article “Purple to Reddish Purple Chrysoberyl from Brazil.”

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Alexandrite, History Article
Alexandrite History and Lore

The gem was named after the young Alexander II, heir apparent to the throne. It caught the country’s attention because its red and green colors mirrored the Imperial Russian flag.

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Color Change in Alexandrite Article
Alexandrite Description

Alexandrite, with its chameleon-like qualities, is a rare variety of the mineral chrysoberyl. Its color can be a lovely green in daylight or fluorescent light, changing to brownish or purplish red in the incandescent light from a lamp or candle flame.

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Gemstones with Alexandrite Effect

The term "alexandrite effect" refers to the apparent change of color in certain minerals from blue-green or greenish violet in daylight to red or reddish violet in incandescent light.

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14 ornaments of coral veneer glued to matrix
Composite Coral Veneer Glued to Artificial Matrix

Items presented as red coral are revealed by testing to be composite coral veneers over an artificial matrix.

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Spring 1988 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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Spring 1993 G&G Lab Notes

This section, from the Spring 1993 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Fall 1995 G&G Lab Notes

This section, from the Fall 1995 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Spring 1995 G&G Lab Notes

This section, from the Spring 1995 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.

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Alexandrite Article
Alexandrite Quality Factors

Learn about the factors that make alexandrite so desirable.

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