Crystals for Energy Healing: A Practical Sourcebook of 100 Crystals by Ashley Leavy is a comprehensive guide to using crystals for spiritual balance, protection, and emotional healing. It provides detailed profiles for 100 stones, covering their physical properties, chakra correspondences, and practical applications, making it suitable for both beginners and experienced practitioners. The book is structured to make it easy to find specific information, helping readers incorporate crystals into their daily routines for holistic healing.