Transparency: Gypsum Can range between transparent to translucent, depending upon the crystal development and presence of inclusions. Transparent crystals allow light to pass through Plainly, though translucent specimens allow some mild passage but show up cloudy or hazy. Density and Particular Gravity: Density refers back to the mass per device https://www.propanraya.com/id/produk/eco-gypsum-ee-4050