Transparency: Gypsum Can vary from clear to translucent, based on the crystal formation and existence of inclusions. Clear crystals permit light to pass through Obviously, even though translucent specimens allow some gentle passage but appear cloudy or hazy. Gypsum happens in extensive beds connected to other evaporite minerals (e.g., anhydrite https://www.propanraya.com/id/produk/eco-gypsum-ee-4050