This piece of fluorite has been cut into a tower point and has a high polish exterior. This piece has beautiful dark colors of blue, green and violet. The most common color of fluorite is violet, but fluorite may also be yellow, green, white, blue, gray, black or exhibit a variety of colors in zones or bands. The different color zones are due to the presence of slight chemical impurities. Most fluorite will glow under a black light. This effect is caused by traces of uranium impurities in the fluorite. Fluorite is a highly protective and stabilizing stone, useful for grounding and harmonizing spiritual energy. Due to its powerful ability to absorb negative energies, Fluorite should be cleared often.