Transparency: Gypsum Can vary from clear to translucent, based on the crystal development and existence of inclusions. Transparent crystals let light to pass through clearly, whilst translucent specimens make it possible for some mild passage but seem cloudy or hazy. Density and Specific Gravity: Density refers back to the mass https://www.propanraya.com/id/produk/eco-gypsum-ee-4050