RR64V0: An excellent sample from one of the most classic localities for the species but rarely appeared there in significant sharp crystals. The small crystals of this piece are morphologically complex, with the dominant faces of the rhombohedron. A lot of them are individual and transparent, very bright and on matrix. An European classic.
Idria Mine, Idria, Idrija Municipality, Inner Carniola Region  Slovenia

Specimen size: 8.4 × 6.8 × 4.4 cm = 3.31” × 2.68” × 1.73”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”