Cuprite

Poteryaevskoe Mine, block 2-1, ↓100 m., Rubtsovsky District, Altai Krai  Russia (06-08/2008)

Specimen size: 5.8 × 4.2 × 4.6 cm = 2.28” × 1.65” × 1.81”
Main crystal size: 2.2 × 1.6 cm = 0.87” × 0.63”