C..
I tried to sell my wedding band that we paid $11,000 for - I have the papers and the appraisal. It was an eternity band, with 12 diamonds (each 1/3 carat) all the way around it.
The best offer I got was for $936.00. Yes, NINE HUNDRED DOLLARS.
I tried jewelry stores and independant jewlers. I tried getting it appraised first (always appraised for the same amount) and THEN offering to sell it. I tried listing it on ebay and craigs list.
The $936 offer, by the way, was from the jewelry store in the mall.
I kept it - I will break it apart and make several pieces of jewelry for my daughter (it was the ring her dad gave me) for her 18th birthday.
I hope you have better luck than I had.