CF21 – Cuprite. Rubtsovskoe Mine, Rubtsovsky District, Altai Krai, Russia.
Very sharp octahedral Cuprite crystals, with clearly dominant octahedron faces and minor shapes of the cube and the dodecahedron, with good luster and reddish reflections. Some of the crystals are partially covered by small crystallizations of Copper as seen. No damage, in excellent condition.
Specimen size: 4.5 cm x 4 cm