Here is a rather chunky unusual ring, with a large black round stone (which I believe to be a black Onyx) claw set into a high mount with openwork decoration to the mount and shoulders.
It is stamped 925 inside the shank.
It has an old resize on the back.
It is a UK size M.
The black stone measures approx 16mm in diameter.
In good condition with some general scuffs to silver.