Gypsum, popular sulfate mineral of good commercial importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-produced crystals the mineral normally has become named selenite. The fibrous significant variety incorporates a silky lustre and known as satin spar; it truly is translucent and opalescent and is particularly valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050