The four of us have matching bands.
I've always liked the puzzle rings and when Kitten saw them she did as well. Our guys bought each of us one.
There is poly jewelry available. I thought about having the guys buy me a necklace to represent the v I'm in with them. But I think I want to buy it myself as a symbol to show them what it means to be the hinge to me. As a symbol of something I, myself, am declaring.
I happen to wear both the band we all have alike and the puzzle ring on the same finger. Kitten wears them on different hands. Just personal preferences there.