Description Cross Blue fountain pen ink is a bright shade of blue and is archival. The 62.5ml glass bottle has a sturdy base and the squared-off corners of the cap makes for easier gripping when opening and closing the bottle. Cross fountain pen that is archival means the inks have a pH level that is neutral and acid-free and have been formulated to resist fading over time. 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.