Diamine Blue Black ink is a classic, professional blue black fountain pen ink known for its deep colour, smooth flow, and reliable everyday performance. The shade blends dark blue tones with subtle black depth, making it ideal for formal writing, office use, and long writing sessions.

Manufactured in England, Diamine fountain pen ink is trusted worldwide for its pen-friendly formulation and consistent ink quality. This blue black ink flows smoothly through fountain pens, offering excellent control, minimal feathering, and clean results on most fountain pen–friendly papers.

The 30 ml bottle size is perfect for regular writers, students, and professionals who need a dependable ink for daily notes, signatures, journaling, and correspondence. Diamine Blue Black delivers a timeless look that remains legible, elegant, and practical for both personal and professional use.

Key Features

• Classic blue black fountain pen ink

• Smooth flow and consistent colour

• Made in England by Diamine Inks

• Low feathering and bleed-through

• Suitable for most fountain pens

• Ideal for office work, journaling, and daily writing

• Compact 30 ml ink bottle