This exquisite Art Deco engagement ring boasts intricate filigree metalwork and delicate milgrain detailing, making it a true antique treasure. The center stone is a stunning old European cut diamond, weighing .54 carats. The center diamond is set with eight prongs in an octagonal setting, adding a geometric touch to the design. Flanking the center diamond are two triangle cut blue sapphires, adding a pop of color and elegance.