I only made a few jump rings outside diameter about 21mm. I used my pliers to make two jump rings into ovals one is a tiny bit larger than the other one I followed each step regarding methods used hanging from 0.5 mm wire are tiny pearl beads topped with vintage milk glass beads from a bead fair and swarvoski crystal.    The round jump ring earrings have handmade blue glass silver foil hand made lampwork beads with a tiny flower bead cap ,again hanging on 0.5mm wire