Gypsum, frequent sulfate mineral of great commercial worth, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-developed crystals the mineral typically has long been known as selenite. The fibrous enormous wide variety incorporates a silky lustre and known as satin spar; it's translucent and opalescent which is valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050