In one of those delightful serendipitious slides into other_awesome_things that blogging does, I found luisaviaroma.com site from the amazing Luxirare.
I didn't much move beyond the rings page.
Delletrez: Rubilite Stone Hand Ring
Fabio Cammarata: Gaudi' O Ring; People Vienna Ring
Iosselliani - Mesh Turquoise Rhinestone Ring
Catarina Zangrando: Swarowski Sea Horse Ring