Pilot Iroshizuku Tsuki-yo Fountain Pen Ink — 50 ml
Pilot's Iroshizuku line has earned its reputation as one of the finest fountain pen inks made today, and Tsuki-yo is among its most quietly captivating colors. The name translates from Japanese as "moonlight," and that's precisely the mood it captures: a deep, contemplative blue-black with hints of teal that shift and shade as the ink dries on the page. In broader nibs and on the right paper, Tsuki-yo reveals beautiful shading — pooling into darker pockets while leaving lighter, almost luminous edges where the ink has run thinner.
Like the rest of the Iroshizuku range, Tsuki-yo flows smoothly, behaves well across a wide range of nibs and papers, and dries in a sensible time. It's a thoughtful alternative to a standard blue-black — formal enough for correspondence and professional writing, but with enough personality to make journaling and creative work a genuine pleasure.
The 50 ml bottle is part of what makes Iroshizuku such a beloved object on the desk. The faceted glass design refracts light beautifully, and the gently curved interior bottom lets you draw the last drops up into your pen without waste. It's the kind of detail that turns a refill into a small ritual.
A favorite among fountain pen enthusiasts for good reason — Tsuki-yo is one of those colors that rewards the time you spend looking at it as much as the time you spend writing with it.
Specifications
- Color: Tsuki-yo (moonlight — deep blue-black with teal undertones)
- Volume: 50 ml
- Bottle: Faceted glass with curved interior base
- Made in Japan
- Brand: Pilot
- Series: Iroshizuku