Known as the metal of champions, Niobium is a superior alloy that is virtually non-allergenic, which is music to sensitive ears worldwide! Niobium comes in a variety of colors including copper. It looks like copper but it is Niobium. Pretty neat? It is so hard to find a copper colored ear wire that will not irritate sensitive ears. These ear wires are finished with a bright copper 3mm bead, giving them an extra pop of rich color. It goes great with steam punk and vintage charms and beads. Made in Santa Rosa, California by TierraCast®, the only company we trust to make Niobium wires for us.