Jewelry material can include a variety of materials, such as AMBER, CORAL, and ENAMEL. AMBER is a fossilized tree resin that has been used in jewelry for centuries. It is usually yellow or orange in color and often contains small insects or plant matter. CORAL is a calcium carbonate material that is formed by living organisms and is found in warm, shallow ocean waters. It is often used in jewelry and is available in a variety of colors. ENAMEL is a glass-like material that is made from powdered glass and metal oxides. It is often used to add color and texture to jewelry pieces.