Transparency: Gypsum Can range from transparent to translucent, dependant upon the crystal formation and presence of inclusions. Clear crystals allow gentle to pass through clearly, while translucent specimens let some gentle passage but appear cloudy or hazy. Gypsum takes place in in depth beds connected to other evaporite minerals (e.g., https://www.propanraya.com/id/produk/eco-gypsum-ee-4050