Transparency: Gypsum Can range between transparent to translucent, with regards to the crystal formation and presence of inclusions. Transparent crystals make it possible for light-weight to go through Evidently, even though translucent specimens allow for some mild passage but show up cloudy or hazy. Impurities in refinery gypsum squander have, https://www.propanraya.com/id/produk/eco-gypsum-ee-4050