Zirconia Sunflower ring

This is a repost. I bought this as gold plate on sterling silver because it's 925 stamped. However, I am actually not sure it is sterling underneath as where the plating has rubbed off it looks a little copper colored. Anyway, I'm not sure what the materials are so I'm listing at costume jewelry price. Lovely ring with sparkle. Wrong size for me unfortunately. Bundle and save or make an offer! :)