Transparency: Gypsum Can vary from clear to translucent, according to the crystal development and presence of inclusions. Transparent crystals permit gentle to go through clearly, whilst translucent specimens let some light passage but appear cloudy or hazy. Density and Certain Gravity: Density refers back to the mass for each device https://www.propanraya.com/id/produk/eco-gypsum-ee-4050