The engagment ring is sorta a contract. By getting married you fufill the contract. Therefore you should get to keep your ring. I'm not divorced but if I was I would keep my ring.
Check the laws of the state. Each one has different laws about the contract of the eng ring and who gets to keep it.
My mom's BFF wore her wedding band on her big toe so she could walk all over the reminders of him. She did take it off when she got remarried.
Ha! Bet my mom would have loved to do that.

But she was always quite saint-like about complaining about my dad (his actions that we saw and knew about spoke for themselves, she didn't need to spell it out for us) so I doubt she would have actually done it, since she did get us out of their marriage.
Thanks for all the responses, all! I saved mine from my ex just because I didn't know what else to do with them. Now, I was thinking about selling them for the money, but I don't know if it's something my son might want one day...
IMO it's doubtful that he would want them.
My mom kept her wedding set from her second husband (I'm not even sure that she and my dad had rings, they were VERY young when they married and had very little money for the 12 years of their marriage) and her third husband had his ring from his first marriage (his first wife left him, as my mom's second husband had done to her). While most of the time when you're making new jewelry "from" old gold rings, the ACTUAL gold isn't being used (it's not pure enough, so they use new gold, and send the old gold off to be purified), in this case, their Miami jeweler made some bizarre free-form necklace pendant blob (VERY Miami Vice, VERY 80s) with the little diamonds from my mom's ring and they gave it to me for my 18th birthday. At the time I appreciated it (it was still the 80s, LOL), but I sold the gold a few years ago.
Ultimately it's just weird to wear stuff from failed marriages, and it felt like bad luck to me.
The money was wasted (this was before DH and I got a financial clue), but it *could* have been used towards something great...maybe you should just sell the gold, keep the stones (stones feel different than gold, in terms of luck or bad feelings, at least for me, and I do still have the stones), and keep that money safe for him. First car, some college, wedding...something nice like that.
