I'm going to get a divorce and according to our pre-nup she has to give back the engagement ring because I caught her cheating on me. Is it rude to give it to another girl. or should I just sell it?

I’m going to get a divorce and according to our pre-nup she has to give back the engagement ring because I caught her cheating on me. Is it rude to give it to another girl. or should I just sell it? It is a really unique ring so I would hate to sell it.

Thoughts?

Steve