This 2nd updated edition is based on new findings in mineralogy and new experiences and research results in the field of gem therapy, including information for an additional 125 crystals not present in the 1st edition, some of which that have been discovered in recent years. With Healing Crystals Michael Gienger presents a comprehensive directory of all the gemstones currently in use in crystal healing. Clear, concise and precise in style, with photographs of each of the crystals accompanying the text, he describes the characteristics and healing functions of each crystal.