Copper:

Copper is a chemical element with the symbol Cu. Pure copper is rather soft and malleable and a freshly-exposed surface has a pinkish or peachy color. Gold, caesium and copper are the only metallic elements with a natural color other than gray or white.

Copper has played a significant part in the history of mankind, which has used the easily accessible uncompounded metal and its alloys for thousands of years. Evidence has been preserved from several early civilizations of the use of copper.

Copper makes beautiful jewelry and is often combined with other metals to make interesting contrasts and designs.

Bronze:

Bronze was significant to any culture that encountered it. It was one of the most innovative alloys of mankind.

Bronze is a mixture of copper and zinc. Bronze only oxidizes superficially; once the surface oxidizes, the thin oxide layer protects the underlying metal from further corrosion.