These copper hoop earrings are a summertime dream come true. The copper tubes are hollow letting the wearer attain a larger earring look without the weight! The jewelry designer has purposefully made the ear wire and closure out of sterling silver to abate any allergy issues you may have. She also added a little bit of sterling silver wire to the hoop to give these simple earrings a bit of panache. The hoop measures 56mm in diameter. To put it in perspective a quarter has a diameter of approximately 23 mm. These are a great buy as they can be worn everyday and they go with everything!