Is it safe to buy body jewelry online?

Like many teenage girls, my daughter has her navel pierced. She wants to get her nose and eyebrow pierced too, but I told her she would have to wait until she is a bit older for those piercings. I am still trying to get used to the fact that she has a ring in her belly button. She has been looking at navel rings online. Is it safe to buy body jewelry online? I have been allowing her to buy belly rings in local stores, but she says they do not have the selection that many online stores and auction sites have.