Transparency: Gypsum Can range between transparent to translucent, according to the crystal formation and presence of inclusions. Transparent crystals enable gentle to go through Evidently, even though translucent specimens allow some mild passage but look cloudy or hazy. Gypsum are available in hydrothermal veins, which can be fractures in rocks https://www.propanraya.com/id/produk/eco-gypsum-ee-4050