Copper is an essential mineral found in plant life and in the human body and it is also a metal alloy with a reddish-orange color. The use of copper dates back over 10,000 years. Pure copper is very soft and malleable and is combined with other metals, such as brass and bronze, for use in jewelry and other uses. The body uses copper for proper bone, nervous system, joint, and circulatory system health. Oral supplements can overload the body with unnecessary copper and can do damage in people who are unable to metabolize the mineral. Therefore, some people find it beneficial to wear copper jewelry for the purpose of having a small amount of copper absorbed through the skin.