These earrings are probably coin silver (about 800 fine) since they are not marked, and are somewhat older. There is some etching on the larger loop, as well as on the clef. The shaping of the clef is somewhat rough, as can be seen in the photo.
Please be aware that these earrings are handmade. The ear wire is somewhat larger than for commercially produced examples, and there is a handmade closure hook at the end of the ear wire. For these reasons, a somewhat larger ear pierce is necessary.