Freeform Rainbow Fluorite Tower F172. 5 x 1. 4 Fluorite is a highly protective and stabilizing stone as it absorbs and neutralizes negative energy. It's known to be such a powerful crystal that it has the ability to neutralize a room of negative energy. Fun fact about fluorite, according to folklore, it's the home of rainbows and is said to contain something of all the other gemstones in it due to its wide range of colors.