Transparency: Gypsum Can range between transparent to translucent, dependant upon the crystal formation and existence of inclusions. Transparent crystals allow for mild to go through Evidently, though translucent specimens allow for some mild passage but look cloudy or hazy. Density and Precise Gravity: Density refers to the mass for each https://www.propanraya.com/id/produk/eco-gypsum-ee-4050