Derek Katzenbach: Faceter, Gem Artist, Custom Jeweler
Maine-based designer Derek Katzenbach discusses his education and inspiration.
Gem Legacy: A Nonprofit for East African Communities
A gem dealer gives back to the mining communities that have supplied gems over the course of his career.
Gray Spinel: A New Trend in Colored Stones
In recent years, the colored stone world has seen a growing appetite for unusual colors.
Jeff Hapeman: Stories from a Gem Cutter
Jeff Hapeman of Earth’s Treasury (Westtown, Pennsylvania) loves a gemstone with a good story.
CVD Layer Grown on Natural Diamond
A composite of synthetically grown and natural diamond was recently identified by the Carlsbad laboratory.
Conversation with Color Source Gems
Moshe and Rachel Chalchinsky of Color Source Gems talk about current trends in the gem and jewelry trade.
Book Review: Narrative Jewelry: Tales from the Toolbox
Review of Narrative Jewelry: Tales from the Toolbox by Mark Fenn.
Jewelry Glossary Project Survey
Moonstone Jewelry
The adularescent gem moonstone was prominently featured in this year’s Tucson shows.
Sapphires from Colombia
Unheated material from a sapphire deposit in southern Colombia is examined in GIA’s Carlsbad lab.
Unique Orange Sapphire with Golden Sheen Effect Reportedly from Kenya
Faint Green HPHT Synthetic Diamonds
Faint green HPHT synthetic diamonds recently submitted to the Carlsbad lab owe their color to high concentrations of nickel.
Freshwater Bead-Cultured Pearls with Multiple Features of Interest
GIA’s Hong Kong laboratory examines a freshwater bead-cultured pearl necklace possessing several interesting features.
Paraíba-Like Synthetic Sapphire
Two flame-fusion synthetic sapphires with a Paraíba-like color are examined at GIA’s Carlsbad lab.
Accredited Gemologists Association (AGA) Conference
A report from the Accredited Gemologists Association (AGA) Conference, held in Tucson, Arizona, on February 6, 2019
Brazilian Alexandrite Update
E. Alan Jobbins (1923–2019)
An obituary detailing the many contributions of gemologist E. Alan Jobbins.