Chakras are the seven primary energy centers of the spinal column. Meditation, visualization, massage and/or wearing a natural stone can be used to stimulate the Chakra area. For example: If you feel you have an under-active thyroid gland, you might try to stimulate the Chakra by wearing light blue natural stones along with meditating, visualizing and massaging your throat area. Please see the Stone Property page for information on natural stones.