Found this ring today by a river. Hallmarked 18K 750 but was tarnished like brass til I polished it up a tad. An old fake perhaps, or can 18K come out of
Bague Vintage Or 18K 750 Diamants - 4.8grs- 53 - L'Atelier des Bijoux d'Occasion
Bague Or 18k, 750/000 - 13.90grs- 54 - L'Atelier des Bijoux d'Occasion
Vintage European Heavy Solid 18K 750 Yellow Gold Smokey Topaz RING 10.7 g. | eBay
Sold Price: 18K GOLD ROLEX SA 750 WATCH - June 4, 0121 10:00 AM EDT
Ladies Movado 18K 750 Yellow Gold 0.05 CT Diamond 3-Row Stacked Band R