Wiktionary
finger ring
n. A ring (often ornamental and/or precious) designed to be worn on a finger.
Usage examples of "finger ring".
The box was large enough to hold sheets of paper, but when the Aes Sedai opened the lid a crack, all she pulled out was a ring carved from stone, all flecks and stripes of blue and brown and red, and too large to be a finger ring.
All flecked and striped in brown and red and blue, it was slightly too large for a finger ring, and shaped wrong, flattened and twisted so that a fingertip run along the edge would circle both inside and out before coming back to where it had started.
He would toss bright bits of glass, or even a finger ring, into the grass, or into the open window of his room, and the birds would go hurtling off to search.