platinum ring with sapphire and diamond

An Art Deco platinum ring set with two natural, unenhanced, baguette-cut sapphires (1.2 and 1.7 carat) flanking a baguette-cut diamond (circa 1.5 carat, VVS, H-I). USA, circa 1920.

weight: 9.71 grams
dimensions: 4-9 mm
ring size: 16 mm / 5.5 US