Fluorescence: Fluorescence Is the assets of a mineral to emit visible gentle when subjected to ultraviolet radiation. Gypsum doesn't fluoresce underneath UV light-weight. All-natural gypsum is mined from geological deposits. These deposits are usually located in sedimentary rock formations designed through the evaporation of historic seas. Organic gypsum is prized https://www.propanraya.com/id/produk/eco-gypsum-ee-4050