Transparency: Gypsum Can vary from clear to translucent, depending on the crystal formation and existence of inclusions. Clear crystals let light-weight to pass through clearly, though translucent specimens allow some gentle passage but surface cloudy or hazy. Salt Flats: Gypsum is a typical part of salt flats, that happen to https://www.propanraya.com/id/produk/eco-gypsum-ee-4050