Gypsum, widespread sulfate mineral of excellent business relevance, composed of hydrated calcium sulfate (CaSO4·2H2O). In effectively-made crystals the mineral typically continues to be known as selenite. The fibrous significant range contains a silky lustre and is named satin spar; it is actually translucent and opalescent and is valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050