My friend Jen informed me, post hoc (actually, I don't know what "post hoc" means, but I think I'm using it correctly) that some guy she had gone on some dates with wore his Tufts college ring. This is absolutely 100% unacceptable, and had she revealed this information to me in the beginning I would have strenuously advised her to dump him immediately. Unless you are literally in the movie Goodfellas, bejewelled or non-wedding related rings are absolutely ridiculous and make men look like child molesters. This past summer I went to Fire Island with Jen, and she befriended a guy whom I refused to even introduce myself to because he was wearing a gold necklace with a 2 x 1.5 inch long Star of David pendant while shirtless on the beach. I begged the people around me to agree that it was completely ridiculous and potentially illegal, but everyone just seemed to be acting casual about it, like it was no big deal whatsoever that some guy was tanning with a 30 inch Jewish star danging from his neck. Um, needless to say I did not fit in in Fire Island whatsoever, and in fact you'd have to light me on fire in order to get me to go back.
For your reference, I've compiled a list of other unacceptable man jewelry: Livestrong bracelets, gold or silver metal chain bracelets, thumb rings, hemp necklaces, shell necklaces, hemp and shell necklaces, crosses, Jewish stars, leather cuffs, Kabbalah bracelets, and college or fraternity rings. The only acceptable bracelet I can think of is that Diabeetus alert bracelet, and even that is borderline unacceptable.