Calcite with Pyrite

Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai  Russia

Specimen size: 9.6 × 8.6 × 4.7 cm = 3.78” × 3.39” × 1.85”
Main crystal size: 4.2 × 3.3 cm = 1.65” × 1.30”