You can easily have your ring melted down and reset in any fashion you would like, you can even add more stones. If you can think it, I'm sure they can make it. Also, you do not sell the gold. They use this gold to make the new setting. If your setting is bigger and requires more gold, they will add to it, which of course costs more. Be sure you go to a reputable dealer/jeweler when you do this. I had an entire ring made out of a sapphire pendant, 1 diamond ring and a couple mismatched gold earrings. It was a little under $2,000, 12-15 years ago. It is beautiful and different, which is what I like. Good luck!
Oops, forgot to mention, go to a store where they do the work in the store. You can speak directly to the jeweler who will be doing the work. I went to a family-owned store on 3 different occasions, in 3 different states and had a great experience at each one.
Julie S - why are your comments always so mean? Be nice, this girl just wants some advice. A. {the green piggies :o)}