Chalcedony is a variety of quartz and can be transparent, translucent or opaque. There are many types and colors of chalcedony, including agate, bloodstone, chrysoprase, carnelian, jasper, onyx and sardonyx.

Chalcedony was used for centuries to promote stability in the ceremonial activities of Native American Indian tribes and the Tibetans revered it as a symbol of the lotus flower. White chalcedony was given to nursing mothers to increase lactation. Stemming from the nurturing energy within the stone, chalcedony symbolizes benevolence, relieving hostilities, irritability and depression, and stimulating optimism and goodwill. The stones also promotes generosity, receptivity and responsiveness. Chalcedony is thought to bring relief from problems in the area of the throat and neck, both physical problems and those associated with using the voice, such as lecturing, etc. Chalcedony has been used to bring tranquility to the nervous system and to dispel worrying thoughts. In addition it is said to promote mental stability and to cure various forms of dementia.