Shop our Chalcedony Jewelry Chalcedony has been in use almost as long as the earth has been inhabited and some of the earliest primitive tools created by man's ancestors some 2.5 million years ago were made of various types of chalcedony. Owing to the huge number of varieties available, chalcedony soon graduated from being used just for tools, and eventually became a popular material for decorative purposes and jewelry adornments. Chalcedonies are believed to have been considered sacred stones by Native Americans and they were often used for ceremonial purposes, particularly for promoting stability within the tribes.
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