Callifolio Trio – Omi Osun, 35 ml

Callifolio Omi Osun fountain pen ink reveals a rich, saturated blue—as deep as a river’s waters—that shifts between ultramarine and navy blue depending on the ink load. The name means “water of Osun” in Yoruba (a river goddess from Nigeria): an immersive, abyssal color that looks magnificent when applied in solid blocks.
"The Art of Writing:
The Callifolio collection was designed for lovers of beautiful handwriting and calligraphy.
It combines technical precision with the charm of artisanal color.
Made with water according to a unique formula developed in our workshop, our inks offer unparalleled glide and are completely gentle on your writing instruments.

36 vibrant, mixable shades:
From ocean blues to earthy ochres, our range features 36 colors that reveal stunning contrasts depending on your paper.
Their biggest advantage: they’re fully mixable with one another. You can blend the shades to create the exact color that matches your pen.

"Trio" (35 ml) glass bottles:
Our high-quality glass bottles are manufactured in Europe.
Their unique trapezoidal shape allows you to arrange three bottles in a circle on your desk, providing perfect stability so you can use every last drop of ink.

Eco-friendly refills, the green alternative:
In line with our commitment to the environment, we offer refill packs in flexible pouches.
Simply fill your glass bottle and reduce unnecessary packaging.
A safe, non-corrosive formula.

Each bottle is carefully formulated to ensure the longevity of your pens.
pH-balanced: gentle on both metal nibs and delicate reservoirs.
No clogging: the ink remains fluid, ensures a steady flow, and is suitable for even the most delicate nibs.

The Artisan's Tip:
Callifolio inks are watercolor-compatible! Use a brush and water to work with them in your sketchbooks to create beautiful color gradients."