Nice early Diamond engagement ring. The ring is not hallmarked, but did test for 14K white gold. Nice filigree work around the stone and starting down the shoulders. Some of the detail on the shoulders has worn away--but the ring is still lovely. The European cut Diamond is an Oval cut --I think. The stone I would estimate at approx. 1/3 ct. The ring is size 5 1/4, weight is 1.5grms. I would date this pretty ring at c1920's.