What is the use of cumorit?

Cumorite is a black or dark green colored mineral containing mostly serpentine, chlorite, and magnesium. It is used as an ornamental stone and is most often seen as a polished cabochon. Cumorite is also used as a rock that can be sliced and used as a cladding for buildings. Some common locations where cumorite can be found are Finland, Sweden, Norway, and Italy.