Transparency: Gypsum Can range from clear to translucent, according to the crystal development and existence of inclusions. Clear crystals make it possible for mild to go through clearly, whilst translucent specimens permit some mild passage but appear cloudy or hazy. Gypsum is calcium sulfate, a Obviously happening mineral. It has https://www.propanraya.com/id/produk/eco-gypsum-ee-4050