Pink Calcite

Calcite occurs in most geological settings and is most common as massive material in limestone and marble; it also forms in hydrothermal deposits. Pink manganese-rich calcite studied in 2026 came from the Xilingol mining area in Inner Mongolia, China. Mindat records manganese-bearing calcite as originally reported from Banská Štiavnica, Slovakia. Cobalt-bearing pink to purplish-red calcite has been documented from Spain and Switzerland.

Like all calcite, it has a Mohs hardness of 3, three directions of perfect rhombohedral cleavage and very strong birefringence (about 0.172), and it fizzes readily in acids, even weak ones such as vinegar. Mindat places calcite in a series with rhodochrosite (MnCO₃), which is the basis for the link that the Japanese retailer Pascle draws between pink calcite and rhodochrosite ("Inca Rose"). Manganese-rich pink calcite from Inner Mongolia showed stable orange-red fluorescence near 625 nm under long-wave UV. Dark pink cobalt-bearing calcite is easily confused with spherocobaltite (CoCO₃). Pascle notes that most pink calcite beads are a pale, almost white pink. Calcite may be dyed, impregnated with wax or plastic, or irradiated, so a strong colour in inexpensive beads is not by itself proof of natural colour.

Calcite (Mohs 3) scratches easily and splits readily along its cleavage. A care table based on GIA's Gem Reference Guide advises never using ultrasonic or steam cleaners; warm soapy water is usually safe. Keep it away from acids, which make it effervesce, and from high heat, at which it can crack apart (decrepitate). The same table lists natural calcite colours as stable to light.

The mineral name calcite comes from the Latin calx, "lime". Mindat describes it as an ancient name and credits Pliny the Elder (AD 79) with naming it as a mineral. Colour names such as this one are descriptive trade names, not separate mineral names.

The Japanese retailer Pascle writes that stones of the calcite group are said to settle unstable emotions and smooth relationships with other people, and recommends pink calcite as a charm for communication.