The price of fluorite is primarily determined by its Calcium Fluoride (CaF2) content. It is generally categorized into three grades: Acid Grade (min 97% CaF2), used for hydrofluoric acid production; Metallurgical Grade (60-85% CaF2), used as a flux in steelmaking; and Ceramic Grade (85-95% CaF2). Additionally, you must monitor impurity levels, specifically Silica (SiO2), Sulfur (S), and Phosphorus (P), as high concentrations of these elements can significantly devalue the ore or incur processing penalties.