Agate is A variegated class of chalcedony, usually with colored bands or other markings, some with no patterns. Comes in a variety of colors. Metaphysical Beliefs,   Sacred to Native Americans, promotes stability in ceremonial activities, balances body, mind, emotions, and spirit, encourages brotherhood, balances yin yang, stabilizes and cleans aura, transmutes and eliminates negativity, develops awareness skills of selfs environment, produces inspirations from and connections to spiritual worlds.  Astrological sign of Agate is Gemini. Number Vibration is 7.