Gypsum also happens in crystal variety, Together with the two most commonly encountered varieties remaining huge clear crystals that in many cases are termed selenite, and fibrous crystals, referred to as satin spar. ‘Selenite’ is the Greek term for moon, and refers to the crystals well-developed pearl-like luster that will https://www.propanraya.com/id/produk/eco-gypsum-ee-4050