Petrified wood is a grounding stone that helps calm energies. Creates balances and helps with physical and emotional issues. Enhances patience. Petrified wood stimulates and clears the root and sacral chakras. 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. Quarter is used for size reference.