Being the “stone of successful love, ” Emerald enhances unconditional love in friendships and other relationships. It is said that Emeralds will keep a partnership in balance, but could change color as a signal of unfaithfulness. Emerald is the stone of the heart chakra, so it works best at healing emotions, as well as treating disorders of the heart. It can also enhance your psychic abilities, clairvoyance and stimulate your mental capacity.