If it's for looks have at but its gonna be waaay up there. Conductivity won't change a bit and honestly. Copper is extremely effective at conducting electricity, depending on the quality of the copper.
Neat fact at the Hoover dam when they ran the electrical wires, it was a hollow copper wire (like an empty copper mod) with a solid wire on the inside floating. Increased efficiency, magnetism, interfence and such. If the Hoover can pump it through hollow copper, your good to go,lol.