Cuprite and Copper after Cuprite

Rubtsovskoe Mine, Rubtsovsky District, Altai Krai  Russia

Specimen size: 3.3 × 1.8 × 1.8 cm = 1.30” × 0.71” × 0.71”
Main crystal size: 0.8 × 0.7 cm = 0.31” × 0.28”