A true masterpiece from the Art Deco era (circa 1920s–30s), this antique platinum ring showcases a 0.90 carat square cut blue sapphire set at the center of an elegant domed design. Surrounding the sapphire is a sparkling array of single cut diamonds, totaling 1.15 carats with GH color and SI1–SI2 clarity, adding brilliant contrast to the rich blue centerpiece. The ring’s face measures 14.1mm, highlighting its bold geometric style and fine craftsmanship. It is a size 5.75 and can be sized.