Ipsilon de Luxe has all the same comforts as the Ipsilon but with a few added featuresBarrel and cap made of black resin, black lacquer, w/ gold plated trimsThe de Luxe has a slimmer cap, highlighted by a strengthened clip w/ elegant blue or black lacquer inlayFountain pen fills via cartridge or converter, and comes w/ a smooth writing 14kt gold nib for better adaptation to your handwriting