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Man sits next to microscope.
Article
Tucson Visit Spurs Geology Professor and Publisher to Head Back to School

Geologist and publisher earns his GG so he can share more information on gem materials with visitors to Geology.com, his Earth Science website.

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Dalmatian stone samples
True Colours of “Dalmatian Jasper”

Discusses the mineralogical composition and provenance of this spotted decorative gemstone.

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Minerals of Georgia: Their Properties and Occurrences Book Cover
Book Review: Minerals of Georgia: Their Properties and Occurrences

Review of Minerals of Georgia: Their Properties and Occurrences, 2nd ed. by Robert B. Cook and Julian C. Gray.

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Fall 2016 Gems & Gemology Cover
Article
Autumn 2016 G&G: CVD Synthetic Diamonds Survey, Reversible Colour Change in Blue Zircon

A summary of the content found in the Autumn 2016 issue of Gems & Gemology.

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Evan Smith studies images of diamond inclusions on a computer.
Article
Postdoctoral Programme Gives Scientists Access to Rare Research Opportunities

GIA’s postdoctoral programme gives researchers access to gemmological data, equipment, and rare, unusual and large gems in its laboratories.

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Peridot from Sardinia, Italy
Characterisation of Peridot from Sardinia, Italy

Gem-quality peridot is occasionally found as mantle xenoliths within basalts near Pozzomaggiore.

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Books: The Collector's Guide to the Minerals of New York State

Review of The Collector's Guide to the Minerals of New York State

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Article
Books: The Collector's Guide to the Minerals of New York State

Review of The Collector's Guide to the Minerals of New York State

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Hydrogen-rich Diamonds
Grey-To-Blue-To-Violet Hydrogen-Rich Diamonds from the Argyle Mine, Australia

The Argyle diamond mine is the only known source of type IaB hydrogen- and nitrogen-rich diamonds coloured grey to blue to violet.

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Minerals of Georgia: Their Properties and Occurrences Book Cover
Article
Book Review: Minerals of Georgia: Their Properties and Occurrences

Review of Minerals of Georgia: Their Properties and Occurrences, 2nd ed. by Robert B. Cook and Julian C. Gray.

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