In its purest form fluorite is colourless but can also be found in a wide range of different colours. Some stones exhibit zones of colour within the same crystal. Reds purples and shades of yellow tend to be the most common although almost any colour can be present including black and white. For this reason fluorite is known as the most colourful mineral in the world.
Composed of calcium and fluorine this mineral is widely used in industry where it's better known as fluorspar. Some material can have such exceptional optical clarity that it can even be used as a lens. The word fluorescence comes from the word fluorite because some stones have the ability to fluoresce under ultraviolet light.
Although often used for lapidary purposes fluorite is soft and brittle which makes it particularly difficult to work with.
This free-standing rough purple fluorite mineral was chosen during one of our many buying trips to South Africa.