Vintage Esti Frederica 925 18K Gold Intaglio Ruby Ring

This is a beautiful vintage by important designer Esti Frederica. The ring has a 18k gold intaglio of Greek design with cupid and Apollo holding a lyre. The ring is set with two cabochon rubies. The sides of the ring have interesting designs. Ring marked with makers marks 925 and 18K. Ring Size 6, weight 18.6 grams, Face of the ring measures 26mm wide,