For thousands of years, crystals have been used for healing, and legend has it that long ago, some people knew how to store information inside these precious stones. How does this seeming magic of crystals work? In addition to delving into the rich folklore associated with crystals, astrologers Janie and Cass Jackson provide an illustrated practical guide here to the many ways that crystals can allegedly cure physical, emotional, and spiritual problems; divine the future; and enhance psychic powers. The Jacksons also explain which crystals work best as an aid in meditation and visualization, to clear a room of negative energy, and to promote creativity, while offering advice on buying, purifying, and charging the stones.