Gypsum, popular sulfate mineral of fantastic professional great importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In nicely-designed crystals the mineral generally is termed selenite. The fibrous significant variety includes a silky lustre and is called satin spar; it can be translucent and opalescent and is particularly valued for ornaments and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050