JACOBI ring with ruby and brilliant-cut diamonds weighing ca. 1.2 ct, WHITE-LTW (H-I)/VS, intense red, oval ruby ca. 6.5 x 5.5 mm, WG 18K, 20.7 g, ring reductions inset, RW: 57, 20th/21st century, minor signs of wear, facet edges of the ruby slightly rubbed, small open nicks.