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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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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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Jaipur, India: The Emerald Cutting and Trading Powerhouse

Jaipur, India, is a leading emerald cutting and trading centre for the global gem and jewellery industry. See inside the industry with a GIA field team, and learn the intricacies of a business seldom seen by the public or most members of the industry.

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Worker attaching wax forms
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Shenzhen: The Frontier of China’s Gem and Jewellery Industry

All jewellery professionals are familiar with the city of Shenzhen, a global jewellery manufacturing centre and a leader of China’s fast-growing gem and jewellery industry. Join the GIA team as we tour the city and discover more about its leading jewellery brands.

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Unveiling the Cat’s-Eye Effect in a 75 ct Colombian Emerald Pair

This article examines the mysteries of rough emerald cutting through a spectacular pair of cat's-eye emeralds from Colombia.

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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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