Dioptase

Tantara Mine, 20 m.↓, Shinkolobwe, Katanga (Shaba)  Congo D.R. (2006)

Specimen size: 3.8 × 3.1 × 2.2 cm = 1.50” × 1.22” × 0.87”
Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”