Art Deco ring with old-cut diamond approx. 2.2 ct

Art Deco Ring with old-european-cut diamond ca 2.2 ct STW (J)VS, surrounded by 28 single-cut diamonds totalling ca 0.28 ct, WHITE (H)/VS-P and 20 faceted sapphires totalling ca 0.3 ct, WG 14K, 4.5 g, ring size 54, 20th century, good condition.