Transparency: Gypsum Can vary from transparent to translucent, depending upon the crystal formation and presence of inclusions. Transparent crystals make it possible for light to pass through clearly, though translucent specimens permit some mild passage but seem cloudy or hazy. Gypsum happens in considerable beds affiliated with other evaporite minerals https://www.propanraya.com/id/produk/eco-gypsum-ee-4050