Gypsum, common sulfate mineral of fantastic commercial value, composed of hydrated calcium sulfate (CaSO4·2H2O). In perfectly-developed crystals the mineral generally has long been termed selenite. The fibrous enormous wide variety incorporates a silky lustre and known as satin spar; it truly is translucent and opalescent and is valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050