Honestly not sure. When i bought them as a lot they said sterling silver, however I don't see a mark, so i cannot guarantee it. I did the magnet test, and the earrings did not attract. The piece that connects the post however did. I hope that was helpful
I want to come up with a reasonable gin but I don't want to risk the sterling at the same time. btw im assuming the hooks are not sterling because i dont see any stamp on it. does the hook stick to magnet? btw frig magnet does not work.