This volume shows why and how the energies of cystals can be harnessed. It combines healing, science and history giving an in-depth treatment of the esoteric and therapeutic uses of crystals to promote self-development and healing. Readers learn how the structure of crystals - with their massive ability to memorize messages - can convey healing energy to balance and harmonize both mind and body. The first three chapters - Crystal Worlds, Crystal Science and Crystal Insight - reveal the properties of crystals. Chapter four, Crystal Clear, gives a detailed explanation of how to use crytals for meditation and general personal development, as well as how to use crystals to balance the human energy system. Chapter five, Crystal Healing, outlines how crystals can be used as a tool for self-healing, using a variety of crystals.