30mm Rainbow Fluorite Donut These Donuts are 30mm in diameter and are carved from Rainbow Fluorite. Just tie with cord to make a great necklace. 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. This Bracelet has a nice mixed of purple tones. 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
