Wet seal has a wide range of adorable necklaces and they're very cheap!
Simple enough, Wet Seal sells necklaces from a 3-10 dollar range and they all are extremely cute. Of course a piece of it might fall from time to time, but that's what a good pair of pliers is for. I just recently bought a gold one with layered heats flowers, birds, etc. It's extremely cute and can tie off a look really nicely. So if you're looking for a good place to find cheap jewelry here's your spot!