Fluorescence: Fluorescence May be the property of the mineral to emit obvious light-weight when exposed to ultraviolet radiation. Gypsum will not fluoresce less than UV mild. Pure gypsum is mined from geological deposits. These deposits are usually found in sedimentary rock formations designed because of the evaporation of ancient seas. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050