Art Deco Ruby, Diamond Gold and Platinum Plaque Ring, Circa 1920

A ruby and diamond early Art Deco plaque ring, with five principle old-cut diamonds, set horizontally, in platinum rub over settings, with a surround of calibré rubies, in a rectangular, gold, rub over setting, with rounded corners, with a border of small, old-cut diamonds, in a platinum, scalloped edged rub over setting, with old-cut diamond set fleur-de-lys shoulders, on an engraved gold gallery bezel and polished gold shank. The inside of the shank is numbered, circa 1920. The estimated total diamond weight is 2.00 carats.