Spiral faux shell link necklace and bracelet set

In excellent condition. Very unique. Coppery gold tone metal spiral links that resemble a shell with a white washing on them. Polished stone ball bead spacers. Lobster claw clasp. Necklaces signed, I just can’t figure out who the maker is. Necklace 18” with a 1” extender. Bracelet 7.5”