Diamine

Diamine is a heritage British fountain pen ink maker (est. 1864) beloved by writers, artists, and pen collectors worldwide. Handcrafted in Liverpool for over a century, Diamine fountain pen inks are known for rich color, reliable flow, and an easy-to-clean, pen-safe formula that suits daily writing as well as creative work.

At Bottle & Plume you’ll find the full spectrum—from timeless blues and blacks to vibrant modern hues with dramatic shading, eye-catching sheen, and festive shimmer. Prefer practical or permanent? Explore Diamine’s office-friendly classics alongside specialty Document and Registrar’s inks. Shopping by format is simple too: convenient cartridges for everyday carry, or bottled inks (in several sizes) for refilling at your desk and mixing into your routine.

Why choose Diamine?

  • Vast color range for journaling, notes, sketching, and calligraphy
  • Smooth, consistent performance across fine to broad nibs
  • Special editions and seasonal favorites to keep your desk inspired
  • Options for standard dye inks, water-resistant formulas, and shimmer effects

Take a look and discover a Diamine ink that matches your pen and your style! Dive in and make every page pop.