Ring with emerald, early 20th century, France, Art Deco

Emerald of rectangular form weighing approx. 2.50ct in an openwork setting set with 10 diamond rautens weighing a total of approx. 0.18Ct (Si1/K-M),
pr. 0.750 gold, pr. 0.900 silver stone setting,
weight 4.270 g,
ring size 15.5
The product was made between 1910 and 1920, France.