Doubly terminated Bournonite

Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (2004)

Specimen size: 3.5 × 3 × 1.6 cm = 1.38” × 1.18” × 0.63”
Main crystal size: 3.5 × 1.2 cm = 1.38” × 0.47”