Coral Fossil, also known as Petoskey stone, is a fossil colony coral that lived in the warm seas during the Devonian time around 350 million years ago. Calcite, silica and other minerals have replaced the basics of each cell. Spiritually it heightens psychic awareness & helps get you in touch with your emotions. Stimulates intuition, imagination & visualization focusing concentration that actualizes creative action. Shields area of the head, revitalizing & energizing crown & third eye chakras. Facilitates & expedites transfer of knowledge from past mystical masters. Fortifies circulatory system, regenerates tissues and blood cells. Reinforces bones. Guards against infections & infectious diseases. Packaged Dimensions.