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Emerald crystals from Colombia, Afghanistan, and Zambia
Photoluminescence Spectra of Emeralds from Colombia, Afghanistan and Zambia

Compares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.

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IMG - WN16 Jaipur Pink City 300x200
Jaipur, India: The Global Gem and Jewellery Power of the Pink City

Examines Jaipur’s role as a coloured stone cutting and jewellery manufacturing centre, with profiles of 17 companies and their factory, trading and retail operations.

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Gemmological 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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"Emeraldolite": A New Synthetic Emerald Overgrowth on Natural Beryl

This article describes a new manufactured gem material marketed under the trade name "Emeraldolite," which is an epitaxial growth of flux synthetic emerald on opaque white beryl.

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The Lennix Synthetic Emerald

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

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The Separation of Natural from Synthetic Emeralds by Infrared Spectroscopy

The technique is nondestructive and, with Fourier transform instrumentation, extremely rapid in comparison to most laboratory methods.

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Gemstone Durability: Design to Display

A treatise on the design, display, care and repair of fine gemstones.

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The Coscuez Mine: A Major Source of Colombian Emeralds

The Coscuez mine, one of a number in Colombia, is rapidly gaining significance as a major source of fine emeralds.

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The Biron Hydrothermal Synthetic Emerald

A new synthetic emerald exhibits some characteristics that are distinctly different from other synthetic emeralds, such as gold inclusions.

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Russian Flux-Grown Synthetic Emeralds

The properties and techniques of flux-grown synthetic emeralds from Russia are discussed.

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