Patek Philippe Nautilus 18K Yellow Gold Diamond Ladies Watch 4700. 18K yellow gold cushion shape case 28 x 28 mm in diameter. 18K yellow gold cushion shape case 28 x 28 mm in diameter. 18K yellow gold original Patek factory diamond bezel. Scratch resistant sapphire crystal. Blue dial with original Patek diamond hour markers. 18K yellow gold bracelet with double folding clasp. Fits 6.5" wrist.