I've recently found this awesome necklace by Etsy seller jamiespinello made out of circles of oxidized copper called "Barnacle Bunches."

These necklaces are made to order, which makes each one unique! Plus they are made from reclaimed copper which makes them even more special! Each circle is formed and hammered by hand, and then set into groups. I love how the circles are all different colors! Truly ridiculously awesome.