Fluorescence: Fluorescence Is definitely the residence of a mineral to emit noticeable light when exposed to ultraviolet radiation. Gypsum doesn't fluoresce below UV light. Pure gypsum is mined from geological deposits. These deposits are typically found in sedimentary rock formations produced via the evaporation of historical seas. Organic gypsum is https://www.propanraya.com/id/produk/eco-gypsum-ee-4050