Transparency: Gypsum Can range between clear to translucent, according to the crystal formation and existence of inclusions. Transparent crystals enable gentle to go through clearly, even though translucent specimens permit some gentle passage but appear cloudy or hazy. Gypsum occurs in extensive beds connected to other evaporite minerals (e.g., anhydrite https://www.propanraya.com/id/produk/eco-gypsum-ee-4050