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Gem Mountain mining site
Article
Update on the Rock Creek Sapphire Deposit

An overview of recently expanded sapphire production at the Gem Mountain mine near Philipsburg, Montana.

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Article
Sapphire Series Part 4: Gem Synthetic Sapphire and Diffusion-Treated Synthetics

From the series, "Sapphire: A Crystal With Many Facets," this article explores how an increase in synthetic sapphire technical applications has affected the synthetic gem industry.

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Article
Decades-Old Synthetic Alexandrite Sheds Light on Modern-Day Research Needs

An overview and commentary on the 2012 Journal of Gemmology article, “Flux-grown synthetic alexandrites from Creative Crystals Inc.”

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Article
Sapphire Series Part 3: Modern Synthetic Sapphire Applications

The third in the series, "Sapphire: A Crystal With Many Facets," this article looks at various emerging applications for synthetic sapphire.

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Article
Sapphire Series Part 2: The Next Generation of Sapphire Crystal Growth Techniques

The second in the series, "Sapphire: A Crystal With Many Facets," this article looks at several advanced growth techniques.

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Article
Sapphire Series Part 1: Intro to Sapphire and Synthetic Sapphire

The first in the series, "Sapphire: A Crystal With Many Facets," this article details the properties and history of this mineral corundum, from its first industrial applications as a mechanical timepiece component to its earliest synthetic growth techniques.

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Confusing, Triangular Inclusions in an Art Deco-Style Pin
Spring 1991 G&G Lab Notes

This section, from the Spring 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

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A Preliminary Report on the New Lechleitner Synthetic Ruby and Synthetic Blue Sapphire

A new synthetic ruby and synthetic blue sapphire have been synthesised by Johann Lechleitner of Innsbruck, Austria.

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The Gemmological Properties of Chatham Flux-Grown Synthetic Orange Sapphire and Synthetic Blue Sapphire

The author examines the gemmological properties of Chatham flux-grown synthetic orange sapphires and blue sapphires.

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Abstract Header from the 2009 issue of Gems & Gemology
Abstracts; Autumn 2009

This article, from the Autumn 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.

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