A fine ruby and diamond ring, comprising a central marquise-cut diamond of approx 1 ct, millegrain-set within a circuit of trapezoidal rubies and a corona of small round-cut brilliants, on an open-navette gallery between the gem-set shoulders of a white gold shank, early-to-mid 20th Century, central stone 9 mm x 5 mm, face 18 mm x 13 mm, N, 4.4 g