Well it's not like the jewelry can be used as a gift again for some other chick. "Oh yeah, you'll like this bracelet a lot, my last gf did too until she gave it back to me by putting it on the hood of my car while it was at work." At the most he could pawn it. But um, if you don't wanna do it face-to-face at least have the courtesy to mail it instead of leaving it sitting on/in his car. That's not really secure. But me I'm not really one to have a breakup and continue associating with said person in any way, so I wouldn't really be thinking or caring about what any stuff during the relationship meant at this current point in time. Just me personally.