All natural untreated Serpentine,a Magnesium Silicate mineral sometimes called Healerite for its metaphysical properties,tumble polished,with piece size running approximately 1/4 to 1 1/2 inch long and wide by 1/8 inch to 1 inch deep and lots scooped from serpentine as pictured.Picture was taken dry without flash.Metaphysical properties include,,aids in dispelling negative feelings,,helps in restructuring of chakras,,helps  to encouraging happiness and generosity in a loving awareness life.