I wear inexpensive pearl earrings... however the saltwater has corroded the posts before in really cheap ones and left green gunk on my ears... My TAG watch, two toe rings, and my diamond wedding band (usually). These things never leave my body, so I don't really think about it. I'll sometimes wear a necklace if I've had one on the night before. I have left my wedding ring on my key-fob before, just depending on the kind of diving I'm doing, but I most definitely leave my engagement ring dry. I travel quite a bit and haven't have a theft problem, but I stay pretty casual on land and don't draw any attention to my jewelry, and only wear the basics. No shark/cudda problems either. All-in-all I feel more comfortable with my watch/rings being with me on my body or secured with me on a boat, than left in my car or in a hotel room.