nose ring size guide, I know this might be really stupid.. but I've had a simple ring for almost 4 years but I never switch it out and I'm just now finding out there are, Amazon.com: Catonmoon Nose Rings for women 18g, nose ring hoop 316L Steel Nose Ring Silver, Gold, Rose Gold, Black Hoops in 6mm/7mm/8mm/9mm/10mm 18g 6mm Rose Gold : Clothing, Shoes