A Remarkable 16.71 ct Transparent Orange-Yellow Sodalite
Rare Natural Bicolor Diamond
Two Foraminifera-Like Objects Found in a Natural Saltwater Pearl
Trapiche Garnet from Vietnam
A rare occurrence of 14 trapiche patterns is observed in a garnet sample from Vietnam.
A Unique Omphacite Jade Pendant
In Memoriam: Heitor Barbosa
Texas Topaz, Slovak Opal, a Beryl Inclusions Chart, and More
A Unique Petrified Tree Fern from Northeast China
Documents the gemological properties, chemical composition, and appearance of petrified tree fern discovered in northeast China.
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.
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.
Slovak Opal: A New Life for a Historical Gem
Reports on the recent production of precious and common opal from a centuries-old locality.
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