Vintage GRANAT 18k Yellow Gold Diamond Buckle Ring, 1950sThis vintage 18k yellow gold diamond buckle ring by Granat Bros. reflects mid 20th century American jewelry design, dating to the 1940s to 1950s. Crafted in solid 18k gold and stamped 18K GRANAT, the ring features a distinctive buckle motif. The top is structured with a geometric buckle form, where one side forms a rectangular frame set with a border of old European cut diamonds, while the opposing band passes through the center, creating a layered,