The Diamine fountain pen inks have been in production for more than 100 years and have been based in Liverpool since 1925. This colours is especially interesting because this is the colour that was used on April 2010 by Presidents Obama/Medvedev in the signing of the nuclear arms treaty at Prague Castel. This ink bottles comes in two different sizes, as well as all the other ink bottles, they come in either 30ml or 80ml bottles, and they can all be used with a fountain pen that's fitted with a converter or a dip pen.
- Royal Blue colour
- 80ml
- Glass Bottle
- Non-toxic water based ink
- Screw cap ink bottle