Joanna on Guy's Jewelry 3.10: I think jewelry is really tricky on guys. Make sure to stay away from anything too girly. Necklaces are always a good idea.
Anastasia on Guy's Jewelry 3.10: Keep it super super simple! I generally don't like rings at all unless it's a simple band. No necklaces, either. Bracelets are the best bet - metallic is best, dark wood could work, too.
Molly on Guy's Jewelry 3.10: I'm not a big fan of guys wearing jewelry. Unless it has significant meaning to you, my suggestion is keep it simple.