Copper is a soft, malleable metal with a warm, reddish-brown color. It has been used for thousands of years to create beautiful jewelry and other decorative objects. Some of the pros of using copper for jewelry include:​ Health benefits: Some people believe that wearing copper jewelry can provide health benefits, such as relief from joint stiffness and arthritis pain. Some of the cons of using copper for jewelry include: ​​It can cause skin discoloration in some people. Copper can react with sweat and other substances on the skin to create a greenish-black residue that can stain the skin. However, this discoloration is usually harmless and can be easily removed. copper can oxidize over time, causing it to lose its shine and develop a patina. While some people appreciate the unique look of oxidized copper, others may prefer to keep their copper jewelry looking shiny and new.