Inclusions: All-natural Gypsum crystals usually consist of inclusions, which happen to be overseas minerals or resources trapped inside the crystal construction during development. Popular inclusions in gypsum is usually clay minerals, iron oxides that result in coloration, or simply very small fuel bubbles. If you intend to use gypsum from https://www.propanraya.com/id/produk/eco-gypsum-ee-4050