Fluorite is made up of calcium fluoride and has a transparent or translucent appearance. Fluorite is sometimes called fluorspar. The name is derived from the Latin word ‘fluo’, meaning to flow. Fluorite is a very protective crystal. This is a particularly useful crystal to have if you are surrounded by hostile or opposing forces. It’s also a powerful crystal to ward off negative energies. It can bring you calmness and relaxation, and it can relieve you of your tensions and anxieties.