Gypsum, widespread sulfate mineral of good industrial importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-created crystals the mineral frequently continues to be named selenite. The fibrous huge selection contains a silky lustre and is named satin spar; it is translucent and opalescent and is particularly valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050