Fluorite – This stone is used to neutralize negative energy and decrease stress. It can substantially increase your powers of concentration, makes the decision making process much easier and gives your self-confidence a boost. It will balance your energies both physically and mentally. Chakras – This stone is a bit of an odd duck. Because of the variety of colors Fluorite comes in, the Chakra it is used for depends on the color of the stone. Astrological Signs of Capricorn and Pisces.