Throughout all the transition the DIAMINE TRADE MARK and production methods survived, symbolizing the finest quality in Fountain Pen Inks, Calligraphy/ Drawing Ink & Stamp Pads. 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.