Black onyx absorbs negative energy, making it a perfect addition to your altar or magical working area. Black onyx aids in self developmental work, and gives strength during times of stress. Realigns the root, solar plexus and third eye. This Black Onyx was tumbled by Teri for approximately 7 weeks. Metaphysical properties are provided for your information and are not meant to replace the advice of a qualified physician or medical practitioner. Due to the nature of this product, color, size, and shape will vary.