The listing, Vintage 18k Gold Filled and Onyx or Black Thermoset Ring has ended.
Very nice vintage circa 1960's 18k G.F. ring with a black stone that is either Onyx, Jet, or thermoset. Looks more like Thermoset to me. Extremely clean with no scratches whatsoever. Very nice filigree setting around the stone. Looks like solid gold. I guess it could be as I have not tested it and it is not magnetic. My guess is its GF though. I bought it as I listed it and it certainly looks like 18k as the gold has a nice darker tone to it.