Dolomite

Asturreta Quarry, 'el pozo', Eugui, Esteríbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre)  Spain (±1970)

Specimen size: 5.8 × 4.4 × 3.2 cm = 2.28” × 1.73” × 1.26”
Main crystal size: 2.3 × 1.9 cm = 0.91” × 0.75”