ring/necklace addons

[HBADPi]

Hey ladies I've got a quick question. I've noticed the ring and necklace attachtments you can buy for your pin in gift mart and I'm thinking of maybe getting one. They don't list the prices so I was wondering if anyone knew how much they run for or if you can get them elsewhere (ie jewelers etc). I hate the fact that my pin just sits in its little box day in and day out without getting worn.

thanks!