Genuine 14K Yellow Gold Endless Hoops. Forget about the cheap hoops that tarnish in less than a month these gold hoops are guaranteed to never tarnish! Gold is a metal that never tarnishes and that can be worn anywhere including in the shower pool or anywhere there may be moisture. The smaller sizes (10mm-14mm) are great for kids to wear as a primary earring and great for Adults to wear as part of a multiple earring set on an ear with multiple piercings or even as a nose ring. The larger sizes (16mm-20mm) are great for adults to wear as primary earring. This is the one set of gold earrings that will last you a lifetime.