Gypsum, widespread sulfate mineral of fantastic professional significance, composed of hydrated calcium sulfate (CaSO4·2H2O). In nicely-formulated crystals the mineral typically continues to be identified as selenite. The fibrous significant assortment contains a silky lustre and is named satin spar; it really is translucent and opalescent and is valued for ornaments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050