Transparency: Gypsum Can vary from clear to translucent, based on the crystal development and presence of inclusions. Clear crystals allow for light-weight to pass through clearly, although translucent specimens allow for some light passage but seem cloudy or hazy. Density and Precise Gravity: Density refers to the mass for each https://www.propanraya.com/id/produk/eco-gypsum-ee-4050