Gypsum, frequent sulfate mineral of fantastic business value, composed of hydrated calcium sulfate (CaSO4·2H2O). In very well-designed crystals the mineral usually is called selenite. The fibrous massive range provides a silky lustre and is called satin spar; it's translucent and opalescent which is valued for ornaments and jewelry. Its mineral https://www.propanraya.com/id/produk/eco-gypsum-ee-4050