Ring in 18k white gold. Art-deco style, octagonal frontispiece with emeralds in carre, onyx and

Ring in 18k white gold. Art-déco style, octagonal frontispiece with emeralds in carré, onyx and brilliant-cut diamond colour J, purity VS2 with a weight of ca. 0.35 carats.
Measurements: 17.0 mm (inner diameter); 13,5 x 15,2 mm.