Optical Calcite, a.k.a. phantom calcite high quality raw crystals are also available as wholesale, please contact. Country of origin: Mexico Size 1 to 3 inches Weight: 1 to 3 oz Origin: Mexico These natural calcite are relatively new calcite types showing distinctive layered bands of black, white, and orange giving it Zebra like appearance. NOTE: A pound will include approximately 4-7 chunks. If you need specifically smaller or larger chunks please send a note. Scientific facts: Calcites are relatively soft crystals with waxy, translucent-to-opaque luster. On Mohs scale its hardness of 3. Zebra calcites like other calcites are are calcium carbonate mineral except that the stripes are formed by the rhythmic deposition of calcite with other minerals like manganese and iron in limestone cavities.. Metaphysical properties: In the metaphysical world, the Zebra Calcites are believed to promote balance and harmony, especially during meditation and aid in releasing repressed emotions and promoting emotional well-being.