ArtMetal

A client bought 2 sterling silver wedding bands. The man's ring is turning his finger black and green and itchy. Her's is fine. He says he has never worn any rings prior to this. I assume he has an allergy to sterling silver. I was thinking of putting a fine silver interior band, thinking the copper in the sterling is doing this. Any other thoughts or suggestions?

And the client says the itching and coloring is not as bad as when he first started wearing the ring.

Thanks,
David