Quartz Crystals: A Guide to Identifying Quartz Crystals and Their Healing Properties, Including the Many Types of Clear Quartz Crystals
Isabel Silveira is a former businesswoman and marketing guru who began working with minerals under crystal master Antonio Duncan in 1995. Since then, she has developed a singular ability to relate the functions of crystals with the themes approached by radioesthesy, radionics, shamanism, kabbalah, and mythology.