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Image of smartphone camera taking a photo of a gold brooch with gems
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How to Photograph Gems & Jewelry

Learn tips and tricks for taking great photos of gems and jewelry, even from your mobile device’s high-resolution camera.

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Update on Ammolite Production from Southern Alberta, Canada

There have been a number of changes in Ammolite production from southern Alberta, Canada, since 2001.

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Nanocut Plasmaetched Diamonds
Cutting Diffraction Gratings to Improve Dispersion (“Fire”) in Diamonds

A new microlithography process developed to create high-resolution diffraction grating patterns on portions of certain facets can improve the dispersion of light and thus the amount of “fire” in a diamond.

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Aurora effect in iris agate.
Aurora Iris Agate

An iris agate with a unique growth texture is carved to produce an aurora-like effect.

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Color bars on top and sides of 3,019 ct rough opal
The Challenges of Cutting a Large Gem Opal Rough

A first-person account of cutting a 3,019 ct piece of white opal to create a 1,040 ct gem with play-of-color across the surface.

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Gota de Aceite: Nomenclature for the Finest Colombian Emeralds

The finest and rarest emeralds are sometimes said to have an optical effect called gota de aceite.

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Tucson: A Showcase of Colored Gemstone Innovation

An overview of the Spring 2016 Gems & Gemology content.

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Ruby and Sapphire Production and Distribution: A Quarter Century of Change
Ruby and Sapphire Production and Distribution: A Quarter Century of Change

During the past 25 years, the corundum market has been transformed from one of medium to high-priced gems to one that encompasses nearly all price ranges.

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Garnets, Sapphires, Opals, and Tarnish on High-Purity Gold

An overview of the Winter 2015 Gems & Gemology content.

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Duncan Pay
Trapiche and More...

Colombia’s unique trapiche emeralds exert a fascination for many gemologists.

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