1.6" Polished, Orange Calcite Spheres

These are polished spheres of orange calcite from Chihuahua, Mexico. The spheres are approximately 1 3/5" (1.6") wide, but vary in size slightly from specimen to specimen. The photos are representative of the sphere(s) you will receive.

Calcite, CaCO3, is a carbonate mineral and the most stable polymorph of calcium carbonate. The other polymorphs are the minerals aragonite and vaterite. Calcite crystals are trigonal-rhombohedral, though actual calcite rhombohedra are rare as natural crystals. However, they show a remarkable variety of habits including acute to obtuse rhombohedra, tabular forms, and prisms. Calcite exhibits several twinning types adding to the variety of observed forms. It may occur as fibrous, granular, lamellar, or compact. Cleavage is usually in three directions parallel to the rhombohedron form.

View All Polished Stone Spheres