Graf von Faber-Castell Guilloche Burned Orange Fountain PenThe coloured barrels of these writing instruments are made of precious resin with a special Guilloche pattern engraved on them. Manual polishing and lacquering processes then provide the special optical effect. All the metal parts are given a high quality rhodium plating. Cartridge converter system Hand made 18 carat gold nib, rhodium plated, run in by hand Manufacturing process involves over a hundred steps, most of them carried out by hand Available