These are silver 925 hoop earrings from the original brand IMERU. They are sold for 4300 yen per earring and 8000 yen for a pair. This listing is for a pair. Thickness: 4mm Size: Approximately 21mm Post thickness: 0.9mm The posts are also made of silver 925. They are handmade, so please understand that each one has a slightly different appearance. :)