Quality Rainbow Fluorite Chip Bracelets These natural Rainbow Fluorite Bracelets have been strung on strong Elastic. They are sold in packs of 5. Rainbow Fluorite is the mineral form of Calcium Fluoride. It is very popular in the use of carvings and less so in Jewellery due to its softness. Of interest is the fact that it is widely used for industrial purposes as a flux in Iron smelting, and is a major source of Hydrogen Fluoride. The largest single crystal ever found was from Russia. It was around 2 metres across and weighed about 16 tonnes!   More Fluorite Items