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You will receive exactly this Calcite Cluster - 53 x 42 x 33 mm / 2 1/8 x 1 11/16 x 1 5/16 Inches; 90g / 3.2oz (see photo, the photos are taken under bright light, stand not included)! NOTE: THE PHOTOs UNDER UV LIGHT WERE TAKEN WITH USING 6 WATT 254nm LAMP!
Color of Calcite is extremely variable but generally white or colorless or with light shades of yellow, orange, blue, pink, red, brown, green, black and gray. Occasionally iridescent. Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate. The other polymorphs are the minerals aragonite and vaterite. Aragonite will change to calcite at 470 °C, and vaterite is even less stable.
Calcite, which gets its name from "chalix" the Greek word for lime, is a most amazing and yet, most common mineral. It is one of the most common minerals on the face of the Earth, comprising about 4% by weight of the Earth's crust and is formed in many different geological environments.