Three-dimensional Raman Mapping of a Chrysoberyl-Quartz Inclusion in an Emerald from Tanzania

The unique trapiche emeralds from Colombia exert a fascination for many gemologists. A special trapiche emerald weighing as large as 22.63 ct has ever...

Nephrite has a long history and profound culturalsignificance in China, along with a vast consumer market. In July 2025, author YG conducted a field t...