GIA Student Design Showcase
Brown Zoning in Diamond
Rainbow-Colored Partially Healed Fissure in Blue Sapphire
Written Characters in Black Opal
Radioactive Morganite
Fashioned Queen Conch Shell Bead
Citrine from Zambia
Elements in Synthetic Overgrowth on Flux-Heated Ruby and Beryllium-Diffused Sapphire
Synthetic overgrowth caused by two different types of treatment are found on two samples in the Tokyo lab.
Finds from the Secondary Market
Dave Bindra shows some noteworthy pieces he obtained on the secondary market and shares his thoughts on the state of the colored stones market.
Multi-Generation Cutting Family from Idar-Oberstein
Japanese Jadeite Tables
The Cause of Iridescence in Rainbow Andradite from Nara, Japan
“Rainbow” andradite from Nara, Japan, occurs as relatively small orangy brown crystals that show attractive iridescence in almost the entire range of the spectrum.
Letters: Nacken Synthetic Emeralds: Additional Information
Prismatic Zircon in Kashmir Sapphire
Laboratory Growth of Gem Materials and the Attempt to Replicate Nature
Spring 2024 Auction Highlights
A Visit to Clarity Diamond’s CVD Facility
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