Transparency: Gypsum Can range from clear to translucent, depending upon the crystal formation and presence of inclusions. Transparent crystals permit mild to go through Obviously, whilst translucent specimens allow some gentle passage but seem cloudy or hazy. For hundreds of years, gypsum has long been employed for plaster and pigments https://www.propanraya.com/id/produk/eco-gypsum-ee-4050