Large Laboratory-Grown Star Ruby and Sapphire
DNA Barcoding and Next-Generation Sequencing (NGS) of Freshwater Pearls
The Anahí Ametrine Mine, Bolivia
Larger Optic Disks
Exceptional innovations using gem and mineral rough at Tucson’s GJX show.
Sweet Home Mine Rhodochrosite from 1888
A rhodochrosite on display at AGTA dates back more than a century to Colorado’s Alma Mining District.
Iridescent Imitation Pearl
Quarterly Crystal: Spessartine in California Quartz
Spring 2000 Gem News International
Phenomenal Gems
A look at the most popular phenomenal gems exhibited at the 2025 Tucson gem shows.
