Diamine Inks are experiencing a very exciting revival and are proud to continue their ink making tradition, only changing the original formulas where necessary to comply with current legislation. Due to the very fine quality Diamine fountain pen inks are suitable for all brands of pen. Shimmering inks containing metallic particles that will make your writing shine. The colour of cap on the bottle representative the colour of the shimmer in the ink. Silver cap represent silver shimmer and gold cap represent gold shimmer.