This is a hoop, similar to what mine was pierced with. It's not as cute but trust me, it's better for you while you heal up! You're more likely NOT to get infected and just take it out like many of my friends did, if you get it done with a hoop:
http://www.lostseaopals.com.au/shop/...belly-ring.jpg
The other kind is commonly referred to as a "banana bell" kind of belly ring. I have a zillion of those now, thanks to going crazy on eBay a few times over the years, LOL!
I got my latest "banana bell" one for $2! And it's a zipper! Silly, I know but it's really FUN!
http://i15.ebayimg.com/03/i/02/7c/11/fc_2.JPG