David Webb Platinum & 18K Yellow Gold Cabochon Amethyst And Diamond Cocktail Ring. Centering a large cabochon amethyst mounted East to West held by the bezel, accented with round cut diamonds in four corners. Vibrant purple color of amethyst, smooth to the touch, with gold hammered in David Webb's signature style makes this ring a perfect jewel to wear for your evening soiree. Size 8 Center Diamond Weight: 0.00 Measurements: Size: 8 Metal Type: Platinum & 18K Yellow Gold Metal Weight: 26.0 gr. Signed: WEBB Condition: Excellent. Stock: RR8486