
Crystals are one of the most effective and unobtrusive ingredients used in spell casting and healing. Today many people wear crystals as jewelry, because of this they are easy to find and not obvious if you chose to wear one as part of a spell. Below you'll find a list of common crystals and their uses. As always you'll also find a list of sites and books that will give you more detailed and specialised information.
The most commonly used crystals include:
For further reading I recommend the following web sites and books.
The Mineral and Gemstone Kingdom
Cunningham's Encyclopedia of Crystal, Gem and Metal Magic - Scott Cunningham