Locality: Marble quarries, Estremoz, Évora District, Portugal
Size: 74 mm x 43 mm x 25 mm (2.9 in. x 1.7 in. x 1 in.)
Weight: 84 g (3 oz.)
Wonderful calcite from the marble quarries in Estremoz, Portugal. The caramel-colored calcite is covered by second-generation growth of tiny calcite crystals on all but its edges, which gives its surface a frosted appearance. This creates a nice contrast with the glassy edges. Crystals to 11 mm. Ex. M. da Pedra; ex. W. Wall.