Calcite, Quartz And Pyrite Formation From Kosovo- Collectors Piece, Home DecorCalcite, Quartz And Pyrite Formation From Kosovo, Home Decor, Collector Piece Weight 105g Size 5cm by 3. 5cm Thickness 2. 5cm Calcite is a rock forming mineral with a chemical formula of CaCO3. It is widespread and found throughout the world in sedimentary, metamorphic, and igneous rocks. Calcite is a powerful cleanser and is good to have around you because it can clear stagnant energies from any environment. It also removes sick or stagnant energies