Alexandra Tosto / Mailys Bages / Agata Kosel
When they're worn like this, I call them spacer rings, but maybe this one should be the outerspacer ring. "Parallel Universes" in silver and garnet by UK designer Alexandra Tosto.
"Labyrinthe" spacer ring from French jeweller Mailys Bages.
And the "Duo" ring makes three! Ring by the UK's Agata Kosel.
Even more jewellery: