Vintage French Cut Aquamarine in 14k White GoldVintage French Cut Aquamarine in 14k White Gold. This original antique Art Deco cocktail ring features a 2. 50 carat aquamarine set in 14 karat white gold. The aqua is an elongated French cut, which we dont often see, and is held by long and prominent double prongs. The mounting is just as beautiful, with wonderful open work, overlapping wires, and neat molded shapes.