Michael Katz is the founder of Gemisphere, a therapeutic gemstone company based in Portland, Oregon. Since 1988, Michael had authored several books on the therapeutic uses of gems. He is recognized by thousands of readers as the world’s leading authority on gemstone energy medicine. Michael’s first book, Gifts of the Gemstone Guardians, the Guardians unveiled a new field of energy medicine—one that uses the energy emanated by gemstone spheres to heal, nourish, and illuminate all aspects of our lives. For the last 35 years, Michael’s leadership has enabled him to lead a team to manifest the vision of a three-fold organization: a publishing house devoted exclusively to works on gemstone energy medicine; an education arm to train both healthcare practitioners and at-home users of gemstones; and a gemstone collection to provide people with a reliable source of therapeutic gemstones.