Dolomite (twinned)

Asturreta Quarry, 'el pozo', Eugui, Esteríbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre)  Spain (±1972)

Specimen size: 6.4 × 4.2 × 4.4 cm = 2.52” × 1.65” × 1.73”
Main crystal size: 3.4 × 3.3 cm = 1.34” × 1.30”