Conventional explanation;
Apatite draws off negativity from oneself & others.
Developing metaphysical abilities & spiritual attunement, it deepens meditation & raises kundalini.
Essential Energies explanation;
Apatite crystal acts like a huge mirror, making it hard for you to kid yourself. It helps you see more of the whole you,good, bad & indifferent. It also mirrors back the spiritual & subconcious self more easily.