Inclusions: All-natural gypsum crystals typically incorporate inclusions, that are foreign minerals or components trapped throughout the crystal composition through formation. Frequent inclusions in gypsum is usually clay minerals, iron oxides that bring about coloration, and even little gasoline bubbles. Agates: A type of quartz that types in volcanic rock. They https://www.propanraya.com/id/produk/eco-gypsum-ee-4050