Transparency: Gypsum Can range from clear to translucent, dependant upon the crystal formation and presence of inclusions. Clear crystals enable light-weight to pass through clearly, though translucent specimens permit some light passage but appear cloudy or hazy. Deposition: Gypsum in the beginning kinds as dissolved calcium and sulfate ions in https://www.propanraya.com/id/produk/eco-gypsum-ee-4050