Transparency: Gypsum Can range between clear to translucent, according to the crystal development and presence of inclusions. Clear crystals enable gentle to pass through clearly, when translucent specimens enable some light passage but show up cloudy or hazy. Plaster: Gypsum plaster is a flexible material useful for developing easy finishes https://www.propanraya.com/id/produk/eco-gypsum-ee-4050