Dioptase with Calcite

Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia (±1973)

Specimen size: 6.8 × 6.6 × 4.7 cm = 2.68” × 2.60” × 1.85”
Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”