Sterling Silver and Tear Drop Smoke Stone Ring

Featured for your enjoyment is this lovely ring, actually I have two of them for sale. This has hallmarks, looks like a bell with maybe a 3 inside it. Also what appears to be either AHS or BHV, it is hard to tell as the whole stamp is on neither ring. The stone is held up high on 4 prongs. Smoke colored and facet cut. Size 7 or 7 1/2.