Measuring app. 5.0mm wide, with an inner circumference of seven inches, centering an Old European cut diamond measuring 4.55 x 2.50mm, weighing approx 0.34ctw, flanked by two bezel set square step cut sapphires, measuring app. 3.0 x 3.0mm; weighing approx 0.28ctw. Geometric engraved design with open frame, fashioned in 14K yellow gold. Circa 1930.