Black Orbit Bronze EarringsBronze Orbit with blackened finish earring and gold filled post; 1. 25 inch. Early primitive crafting techniques have influenced the imperfect form and texture of this design. Julie Cohn Design uses a special finish on their bronze pieces, which protects them from tarnishing and discoloring your skin. They recommend using a clean cloth to restore luster on the pieces. Do not use any chemical or polishing solutions on the jewelry.