<p>He does deserve the ring back but unfortunately may not get it. Without a written contract, she can keep it and doesn’t have to give it back to him, technically speaking. As silly as it sounds there should be a contract upon giving certain items to people (car, diamond ring, house) stating that they acknowledge that if something goes wrong, then they agree to return the item.
Without having a legally signed document, the ring is her property because she is the possessor and he doesn’t have anything legal to uphold his claim.</p>
<p>She definitely should give it back but the hard truth is without a legal “something,” she doesn’t have to.</p>
<p>I’m not familiar with this though but if I was him I’d do everything in my power to get it back. I got it! The receipt. If the receipt has his name on it, its his, provided that no other legal document is in existence.</p>
<p>Philosophically: technically, you can go and beat up somebody/hurt them for no reason, but you don’t because it is wrong and amoral. so too, you don’t keep something expensive after you keep a promise and then break it for the purpose of keeping a very expensive item, that is wrong and amoral.</p>