Fluorescence: Fluorescence Is definitely the house of a mineral to emit seen light-weight when exposed to ultraviolet radiation. Gypsum will not fluoresce underneath UV light-weight. An important Notice ahead of including gypsum into the soil should be to often know your soil status. Always do soil screening.  Gypsum karst landscapes https://www.propanraya.com/id/produk/eco-gypsum-ee-4050