This antique piece was handcrafted sometime during the Art Deco design period ( 1920-1940 ). The Deco setting is 19k white gold and features a sparkling 0.50 carat center diamond ( Approximately one half of one carat ). The center diamond grades an I in color, VS1 in clarity. The setting also features four accent diamonds in a distinct geometrical motif. This ring is currently a size 6 1/4.