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CHALCEDONY

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 transitioned to become a popular material for decorative purposes and jewelry adornments. Chalcedony is a translucent stone with a waxy luster and a medium light blue-green to turquoise color. Tones of blue, green, pink, grey, and brown are most likely a result of dyeing or heat-treating.

Chalcedony is believed to have been considered sacred by Native Americans, and the stones were often used for ceremonial purposes - particularly for promoting stability within the tribes.

Chalcedony is rated at 7 on the Mohs scale of hardness and is a tough, durable gem that is suitable for all jewelry applications.