Antique Navette Emerald & Diamond Ring. The beauty of the Navette ring and its long history are fascinating. The ring's popularity began in the 18th century. Navette is the French meaning for tiny ship, hence the design.The stone is cut in the step cut or emerald shape. Clarity of the Emerald, (due to chip) is I2 clarity. Stone measures approximately 3.70 x 4.83 mm.