Locality: Osilo, Sassari Province, Sardinia. Italy
Size: 45 mm x 40 mm x 33 mm (1.7 in. x 1.6 in. x 1.3 in.)
Weight: 60 g (2.1 oz.)
Prismatic snow white quartz to 7 mm with scalenohedral brown calcite to 11 mm. The calcite crystals have pitted surfaces; a dark mineral has deposited in these areas.