Description The Platinum 3776 Black Diamond fountain pen in with Rhodium Trim features a black transparent resin barrel and cap accented by rhodium-plated trim. The Platinum 3776 fountain pen uses a rhodium-plated 14k gold nib that is available in several nib sizes and the pen fills via the included proprietary Platinum converter for use with bottled ink. Platinum proprietary ink cartridges are available in several colors and formulations. The cap of the Platinum 3776 fountain pen screws on to close, and the innovative cap "Slip & Seal" technology prevents the ink from drying out for up to 24 months! We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.