These are rough chunks of Chiastolite with the "X" polished. Chiastolite is a stone of protection and creativity. Helps dispel negativity and brings harmony. Chiastolite helps with problem solving, calms fears, clears feelings of guilt, helps one face reality. Balances and strengthens the chakras. Helps with lactation, lowers fever, and balances the immune system. 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.