This is a fairly simple sterling Ring.
It is a fire agate from Slaughter Mountain.
There seems to be something about setting stones to sort of look like eyes. Sort of how a car's headlights look like eyes. Something subconscious.
I didn't get any construction pictures, other than these when I was goofing off.
This close up gives the basic construction:
more pictures including the back:
|This is more work and effort than usually go into a sterling ring. The shank disappears into the back and there is an exposed ring around the outside.|