Fluorite is also called fluorite. A common mineral in nature can coexist with many other minerals. It is produced in many parts of the world and has five effective varieties. The main component of equiaxed crystal system is calcium fluoride (CaF ₂). The crystal is octahedron and cube. The crystal is glassy, colorful and brittle, with Mohs hardness of 4, melting point of 1360 ℃ and complete cleavage property. Some samples can emit light under friction, heating, ultraviolet radiation, etc.

This mineral comes from volcanic magma. During the cooling process of magma, the gas-water solution separated from the magma contains fluorine. During the rising process of the solution along the crack, the fluorine ions in the gas-water solution combine with the calcium ions in the surrounding rocks to form calcium fluoride. After cooling and crystallization, fluorite is formed. It exists in granite, pegmatite, syenite and other rocks.

It is not often used as a gem because of its brittle and soft nature. In industry, fluorite is the main source of fluorine, which can extract and prepare fluorine elements and various compounds, and is linked to downstream steelmaking enterprises. The fluorite specimen with bright color and beautiful crystal shape can be used for collection, decoration and carving crafts.