Antique Art Nouveau .70 Carat Cushion Cut Diamond 18K Yellow Gold Ring

This is a beautiful original art nouveau ring c.1920. The ring is set with a fiery .70 carat old mine cushion cut diamond. The setting has a flowy art nouveau design. The diamond is H Color SI-2 clarity. The ring is in excellent condition, Ring Size 5, Weight 2.8 grams, diamonds measures 6.5mm by 5mm.