Pink Calcite is a variety of Calcite. It is a calcium carbonate mineral that usually crystallizes in large mass formations. The pink color is caused by tiny inclusions of Manganese, which can range from a light white-pink, to an extremely bold almost violet. Pink Calcite can be found in just about any country with the highest quality crystals coming out of Mexico. The Mexican Pink Calcite is truly one of the softest pink stones that we have ever seen. We still have a hard time wrapping our head around the fact that it is 100% natural.