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.
Update on Ammolite Production from Southern Alberta, Canada
There have been a number of changes in Ammolite production from southern Alberta, Canada, since 2001.
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.
Aurora Iris Agate
An iris agate with a unique growth texture is carved to produce an aurora-like effect.
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.
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.
Tucson: A Showcase of Colored Gemstone Innovation
An overview of the Spring 2016 Gems & Gemology content.
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.
Garnets, Sapphires, Opals, and Tarnish on High-Purity Gold
An overview of the Winter 2015 Gems & Gemology content.
Trapiche and More...
Colombia’s unique trapiche emeralds exert a fascination for many gemologists.