Chalcedony was named after na ancient city in Turkey near Istanbul. Chalcedony is a variety of quartz and can be transparent, translucent or opaque. There are many types and colore of chalcedony, some of which are covered in this list of stones, including agate, bloodstone, chrysoprase, carnelian, jasper, onyx and sardonyx.
Chalcedony was used for centuries to promote stability in the ceremonial activities of Native American tribes and the Tibetans revered it as a symbol of the lotus flower. White chalcedony was given to nursing mothers to increase lactation. It has also been used to bring tranquility to the nervous system and to dispel worrying thoughts.
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