It has more uses than any other mineral and is found everywhere on earth. Even the earth's crust is made up of a significant amount of calcite. It can be used as construction material (limestone and marble), abrasive cleaning agent, agricultural soil treatment, pharmaceuticals and more.
Calcite is believed to be a powerful spiritual cleanser, as well as a protective stone against negative energy. Calcite has also been believed to be increase healing, learning and awareness.