Ring with fine emerald and old-cut diamonds

Ring with fine octagonal faceted emerald ca. 2.2 ct, surrounded by old-european-cut diamonds totalling ca. 1.1 ct, ca. TIW-TIN (K-M)/SI-I2, 14K yellow gold, face side platinum, 5.1 g, ring size 62, late Art Déco, 1. H. 20. Jh., good condition consistent with age.