- Corundum (Var: Ruby)
- Thumbnail, 2.4 x 1.5 x 1.2 cm
- Luc Yen, Yenbai (Yen Bai) Province, Vietnam
A fine thumbnail cluster of lustrous, translucent, classic pigeon's-blood red, ruby crystals from recent finds at Luc Yen, Vietnam. The crystals are nicely striated and the large crystal is doubly terminated.