Classic ring with fine Burma ruby 3.68 ct, not heated,

Classic Ring with Burma Ruby, no heat 3,68 ct, surrounded by 20 diamonds totalling ca. 0.86 ct, ca. WHITE (G-H) /VS-SI, YG/WG 18K, 7.1 g, ring size 54, ruby ca. 9.75 x 9.2 x 4.8 mm, 20th century, good condition. DSEF certificate no.: 027834 from 12/2017 enclosed.