In Memoriam: Heitor Barbosa
Suspended Crystal in Red Spinel
More on Virtu Gem’s Ethical Supply Chain Practices
An update on Virtu Gem’s mission to improve artisanal mining and gem trading practices in Kenya, Malawi, and Zambia.
A Remarkable 16.71 ct Transparent Orange-Yellow Sodalite
Hollandite in Amethyst
A spectacular display of hollandite crystals is captured within an amethyst cabochon.
Trapiche Garnet from Vietnam
A rare occurrence of 14 trapiche patterns is observed in a garnet sample from Vietnam.
A Unique Omphacite Jade Pendant
Cross in Natural Diamond
Two Foraminifera-Like Objects Found in a Natural Saltwater Pearl
Treated HPHT Laboratory-Grown Diamond with Dramatic Color Zoning
A Fancy Deep brownish orange treated HPHT-grown diamond exhibits multiple defect concentrations in various growth sectors.
Distinctive Feather in Diamond
A feather observed in a natural diamond resembles a large reptile.
“Sun Spangle” in Amber
Carbon Dioxide in a Brown Diamond
Rare Natural Bicolor Diamond
Topaz from Mason County, Texas
A comprehensive look at Texas topaz, detailing its gemological and compositional characteristics and providing a basis for using trace element concentrations to identify its origin.
Micro-Features of Beryl
Provides a visual guide to the internal features of different varieties of beryl.
A Unique Petrified Tree Fern from Northeast China
Documents the gemological properties, chemical composition, and appearance of petrified tree fern discovered in northeast China.
Slovak Opal: A New Life for a Historical Gem
Reports on the recent production of precious and common opal from a centuries-old locality.
Gems Recovered from Sedimentary Rocks
Explores the formation of sedimentary rocks, gems found and formed in sedimentary environments, and the alluvial mining of these gems.
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