Gypsum, common sulfate mineral of terrific professional great importance, made up of hydrated calcium sulfate (CaSO4·2H2O). In well-produced crystals the mineral generally has been named selenite. The fibrous enormous wide range features a silky lustre and is named satin spar; it is actually translucent and opalescent and is also valued https://www.propanraya.com/id/produk/eco-gypsum-ee-4050