Smithsonite (variety cobaltoan)

Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia

Specimen size: 3.7 × 3.5 × 2.6 cm = 1.46” × 1.38” × 1.02”
Main crystal size: 0.3 × 0.2 cm = 0.12” × 0.08”