Stunning vintage Art Deco 14k green gold (with pink gold accents) filigree marquise navette cut black onyx and diamond ring, size 7.5. Wonderfully detailed with rose gold chaff of wheat and flower engraving on the broad setting prongs that hold the stone securely in place. Measures 13/16" in length, band tapers to 2.1mm at the back of the ring shank, weighs 4.5 grams. With a 2.2mm (.03 carat) round single cut diamond mounted in a white-gold bezel setting in the center. With a faint partial "14K" hallmark stamped on the inside of the ring shank. In wonderful extremely well babied condition with one very minute abrasion on the black onyx stone that can be seen under magnification, and truly hardly even worth the mention. Very flattering and elongating on the hand, a real beauty. Circa 1920.