3/8 inch 10 mm in diameter and 1 mm thin, These Sterling hoops are the second smallest out there, and are perfect for upper ears, noses and lips as well. So tiny you’ll probably need someone to help you put them on the first time, but the idea is once you put it on, you leave them on for a while since silver wont infect your skin. They are all Hand Made, Excellent Quality, Polished Finished. The picture is highly enlarged to show detail.©