Transparency: Gypsum Can range from transparent to translucent, with regards to the crystal formation and presence of inclusions. Transparent crystals make it possible for mild to go through clearly, while translucent specimens permit some mild passage but appear cloudy or hazy. For centuries, gypsum is employed for plaster and pigments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050