Amethyst is the prized purple form of Quartz, naturally colored by Iron minerals. Amethyst varies from very light purple to a deep black purple. Amethyst is a key spiritual stone used to open communication with angels, telepathy and other psychic abilities. It is an excellent stone for meditation, dream work and past life work. Amethyst is used to balance anything to do with the head like headaches, insomnia, worry and restlessness. Amethyst helps to open and balance the Crown and Third Eye Chakras.