Indigo Blue Azurite Ring with Blue Topaz in Sterling Silver Size 7

Previously owned sterling silver ring set with a large indigo blue azurite cabochon. On each side of the stone in an inset faceted and foiled bright blue topaz. The silver has a rhodium plating to stop tarnish. 

Size 7. Ring is 3/4" wide. Weight: 13.9 grams. No hallmarks.