Gypsum, frequent sulfate mineral of wonderful business great importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In well-produced crystals the mineral normally is termed selenite. The fibrous enormous wide variety includes a silky lustre and known as satin spar; it really is translucent and opalescent which is valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050