Green Onyx is a great Heart Chakra stone as well as abundance stone. It has been known as the symbol of restfulness and purity since ancient times. The stone has the power to release you of all worries, tension, and stress. It is believed to provide positive, strong mental support. You can use it in abundance grids, carry it with you as a good luck talisman, or place it under a pillow to help with balancing one’s emotions.