Fluorite is one of our most popular minerals, and you can see why here (it's also why we need to include the reference code in the name).
It has that lovely flowing quality, so you won't be surprised that fluorite derives from the Latin noun fluo meaning a flow of water.
Fluorite has also been called "the most colourful mineral in the world" with the typical colour combinations being the purples, blues and greens you see here.
In 1852, fluorite gave its name to the phenomenon of fluorescence, and, if you really want to know, fluorite is used as a flux for smelting glass and enamels - though we prefer it used for scarves.