Does anyone know....

Does anyone know how much it costs to get jewelry appraised? I have decided (not that it was much of a decision) to sell my engagement and wedding rings (if I can). But, since my ex has all the paperwork, which is probably long gone by now, I am going to need to get it appraised. I figured I would clean them up, stick some pic's on Craigslist or Ebay or something, and try to make some money off of a bunch of jewelry that, while very shiny and sparkly, is doing me absolutely no good sitting in a tupperware container under my bathroom sink. I can sell them super cheap and still feel like I got something out of the bastard.