Don't just go to your local jewelers. Try your local goldsmiths, too, wherever the "arty" ones hang out. One of my friends, a talented goldsmith, made my ex's and my rings, and they were gorgeous. He specialized in celtic knotwork at the time, and we had him modify an existing design of a band for us to include stones. But if we'd wanted something rather plain, he'd have done that for us too.