- Miniature, 4.4 x 2.8 x 2.8 cm
- Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China
A stunning bournonite from the recent finds at the Yaogangxian Mine of China. This complete-all-around, floater crystal is pristine. It features well-defined cogwheel crystals that look like bright machine parts, with chrome-like luster.