A cryptocrystalline variety of Quartz. Agate, Carnelian, Chrysoprase, Bloodstone, Onyx are all varieties of Chalcedony.

Hardness: 7

Locations: USA, Austria, Czech Rep., Slovakia, Iceland, England, Mexico, New Zealand, Turkey, Russia, Brazil, Morocco

Astrological sign of: Cancer and Sagittarius

Used for bringing mind, body, emotions and spirit into harmony; Used to enhance generosity, responsiveness and receptiveness. Beneficial in alleviating hostility, nightmares, fear of the dark, hysteria, depression and turbulent emotions. Chalcedony is a stone which encourages brotherhood among all.