Description Diplomat Moss Green fountain pen ink is a bright, rich shade of green that comes packaged in a shorter, wider 30ml glass bottle. Diplomat fountain pen ink is specially formulated by Octopus Fluids of Saxony, Germany to perform beautifully in your fountain pen. Having trouble deciding between colors? Use our Ink Comparison Tool to quickly and easily view different colors side by side. We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers. Please note that items in the Outlet are a final sale.