Crystals have been accredited with mystical and healing powers for centuries which were used by ancient astrologers and priests. The word crystal is derived from the Greek word used for ice, but although some crystals such as quartz resemble ice, others such as aventurine and petrified wood have a more earthy appearance.

A mineral that has a definite atomic structure, with smooth flat faces arranged into a geometric pattern is called a crystal. It has a cube, a prism or a multi-faceted shape. Crystals affect anything and everything and hence are used in crystal and gemstone therapy.