Diamine are one of our favourite ink brands, they've been around since 1864 and they've been producing quality inks ever since. Their ink is safe to use in all brands of fountain pen. It's water-based, acid-free and non-toxic, and is also vegan-friendly.

We're excited to say we now have a new series of brand new Cult Pens exclusive colours inspired by the wonders of the world.

Colosseum: Travertine limestone is one of the three main building materials used to construct the Colosseum along with tuff and brick-faced concrete. The travertine limestone was used to construct the pillars, ground floor and external wall, as well as much of the seating in the interior. It's a beautiful sandy brown colour and we loved it, so we made an ink that looks like it!

Taj Mahal : Two notable decorative features are repeated throughout the Taj Mahal: Pietra dura and Arabic calligraphy. Arabic calligraphy is prevalent on the arched entrances to the mausoleum proper. Pietra dura incorporates the inlay of semi-precious stones, including lapis lazuli which we've taken inspiration from with this colour.

Available in 30ml and 80ml bottles.