Copper Fold Formed Earrings.  Fold forming is the process of heating (annealing) the metal then placing the disc in a vice, folding it and hammering the fold for detail.  Then the disc is annealed again and unfolded.  The patina is created from the flame which adds oxides called fire scale.  A very fine steel wool was used to polish the metal and creates hints of shiny copper through the patina.  Niobium, hypoallergenic ear wires add a nice design element.