What to do with the ring?

I remember, 4 years ago everything was perfect. And I went the classic path: misunderstanding, tension, dispute, and then after a few month , the common impression that the divorce was unavoidable. Now that I moved on in my life, I got ride of almost everything that was linked to Mary. Except maybe one thing: the ring. I know, I know, a lot of people keep them in a drawer as a symbol of the past. But for me it seems like it would allow me some relief to just have it out of my life too. When I purchased this ring its price was a symbol of my love, now I wish I could have some of this back. I went to the jewelery store I purchased it at and they only proposed 30% of its price! So after the lawyers, the divorce, now I have to get ripped of by yet another profession? Finally I went online and found one website (it's called idonowidont.com ) and it seems decent. I was wondering if anybody tried their services and if you had some advices on this. I would greatly appreciate.