Description Cross Violet fountain pen ink is a deep, rich shade of purple and is archival and comes as a 3ml sample in a plastic vial with a dip at the bottom to allow you to easily get every drop, labeled with the name of the ink brand and color. 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.