Here are two sets of silver hoop earrings. I purchased these at a flea market. I've only worn the larger pair once. I've worn the smaller pair many times. They were advertised as silver 925, but they were inexpensive, so I suspect they aren't pure silver. However, they still look great. Larger pair: Outer diameter: Approximately 15mm Smaller pair: Outer diameter: Approximately 12mm x 10.5mm They're very easy to put on and take off with a one-touch mechanism, and they're simple, so I recommend wearing them all the time.