by Doreen Virtue and Judith Lukomski
The directory of Crystals includes information about the Angels associated with each crystal and stone. There's also a section for the Feng Shui enthusiast and practitioner alike. There's a section on how to program and charge crystals and how to make your own crystal mandala.
Crystal, Gem and Metal Magic
by Scott Cunningham
An encyclopedia of stones, their power, how to care for and use them. This book includes a color compendium of stones, crystals and minerals describing the properties of each one. There is an appendix of which stones to use for specific purposes like love, peace, manifestation and healing.
The Book of Stones
by Robert Simmons and Naisha Ahsian
This is a must have for your crystal library, taking one's education into the realm of crystals, gems and minerals to the next level of understanding. Information includes key words, elements and Chakra association. There is an extensive Stone Property Reference Guide in the back. There's detailed information about the Spiritual, Emotional and Physical properties as well as recommendations of other crystals that work well together.