Transparency: Gypsum Can range from transparent to translucent, based on the crystal formation and presence of inclusions. Transparent crystals permit light-weight to go through Plainly, while translucent specimens let some light-weight passage but look cloudy or hazy. Gypsum are available in hydrothermal veins, that are fractures in rocks filled with https://www.propanraya.com/id/produk/eco-gypsum-ee-4050