Composition: Chalcedony is a variety of Quartz, Silicon Dioxide Hardness: 7
The name Chalcedony (pronounced "cal-sed-nee") comes from an ancient Greek city of Asia Minor, known as Chalcedon.
Metaphysical Properties: Chalcedony was a sacred stone of the Native Americans, who used it to promote stability during ceremonial activities. Balances energies of mind, body, emotions, and spirit. Symbolizes brotherhood, benevolence and generosity. Group communication.