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Gem-Quality Synthetic Diamonds Grown by a Chemical Vapor Deposition (CVD) Method

Brown-to-gray and near-colorless single-crystal type IIa synthetic diamonds grown.

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“Diffusion Ruby” Proves to be Synthetic Ruby Overgrowth on Natural Corundum

A relatively new production of red corundum, reportedly from Bangkok, has been offered for sale in recent years.

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Gemological Investigation of a New Type of Russian Hydrothermal Synthetic Emerald

Tairus, in Novosibirsk, has produced yet another new type of Russian hydrothermal synthetic emerald.

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Russian Flux-Grown Synthetic Alexandrite

Synthetic alexandrite is being flux-grown in Russia.

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Growth Method and Growth-Related Properties of a New Type of Russian Hydrothermal Synthetic Emerald

A new type of Russian hydrothermal synthetic emerald is produced.

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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 & Gemology, is a compilation of interesting finds from GIA’s laboratories.

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Inamori Synthetic Cat's-Eye Alexandrite

This article reports on a detailed gemological examination of this new synthetic cat's-eye alexandrite.

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The Lennix Synthetic Emerald

An examination of the gemological properties of a French flux fusion-grown synthetic emerald.

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A Study of the General Electric Synthetic Jadeite
A Study of the General Electric Synthetic Jadeite

Synthetic jadeite, the result of an experimental study, is examined in this article.

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Synthetic Emeralds
Confocal Micro-Raman Spectroscopy: A Powerful Tool to Identify Natural and Synthetic Emeralds

More than 300 natural and synthetic emeralds from various sources were examined with confocal Raman spectroscopy.

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