Transparency: Gypsum Can vary from transparent to translucent, based on the crystal formation and existence of inclusions. Clear crystals permit mild to pass through Obviously, although translucent specimens enable some light passage but look cloudy or hazy. Salt Flats: Gypsum is a typical part of salt flats, which are expansive, https://www.propanraya.com/id/produk/eco-gypsum-ee-4050