Diamine Ancient Copper is a rusty red-brown fountain pen ink with medium shading and medium brown sheen. It dries in 30 seconds in a medium nib on Rhodia and has an average flow. Diamine ink has been made in England since 1864. Can cause some crystallization on the pen's nib (nib creep). While this can look alarming when you open your pen, it is generally harmless; it just might take some extra attention when cleaning. Brand Diamine Ink Name Ancient Copper Country of Origin England Color Brown Dry Time 30 Seconds (Pilot Vanishing Point Medium Nib on Rhodia Paper) Flow Average Shading Medium Sheen Medium brown sheen Shimmer No Limited Edition No Water Resistance No Iron Gall No Pigment No