Gypsum, common sulfate mineral of good business relevance, composed of hydrated calcium sulfate (CaSO4·2H2O). In effectively-made crystals the mineral frequently is named selenite. The fibrous enormous selection provides a silky lustre and is called satin spar; it is translucent and opalescent and is particularly valued for ornaments and jewelry. The https://www.propanraya.com/id/produk/eco-gypsum-ee-4050