When I first started getting my hands on metal again, I began working with copper. I did that because the metal was cheap compared to other metals like silver. I have now worked with a number of different metals and with most have stopped using them. But copper I still like. I like the warmth the metal brings to a piece of jewelry. As a piratical metal for jewelry it might not be the best choice but that warmth I just can’t part from.
With all my earring made from a base metals I use titanium ear wires. Titanium is hypoallergenic. These ear wires should not bother anyone who normal reacts to other metals.