its rim decorated with small and large round blue patches

with two arches at the top and one at the bottom

Then these elegant women's stud earrings are exactly what you're looking for

25mm circle (without hanger and eyelet)

This is normal for handmade items and natural materials

Silberring Amethyst lila 5 mm rund Zopf Rand 925er Sterling Silber Stein Ringe Schmuck holz plugs its rim decorated with smallThe gleaming silver ring is made of 925 sterling silver and features a round, purple amethyst stone. The approximately 5 mm amethyst is set in a silver border, which is in turn surrounded by a braided band. Ring width: approx. 8 mm at the top, approx. 2 mm at the bottom. Material: 925 sterling silver, amethyst