Fluorite is a calcium fluoride with the chemical formula CaF₂ and crystallizes in the cubic system. Fluorite is allochromatic, meaning that it can be tinted with elemental impurities. It comes in a wide range of colors and has consequently been dubbed "the most colorful mineral in the world." Under ultraviolet light, fluorite can fluoresce a bright green. The intensity of the fluorescence and the color can depend on which impurities are found in the crystal structure.

Calcite is a carbonate mineral with the chemical formula CaCO₃. It can range from transparent to opaque, as well as colorless to a milky white. Under short-wave ultraviolet light, calcite fluoresces orange-red or pink.

This particular specimen has calcite crystals protruding out of the matrix, which are called manganoan calcite. Under ultraviolet light, they will fluoresce pink.