3 Oysters

3 Oysters is a fountain pen ink brand based in Seoul, South Korea. Known for its dedication to quality and design, 3 Oysters creates water-based inks that deliver smooth performance and vibrant color. The brand name reflects the three key tools of writing: pen, ink, and paper.

3 Oysters inks are made with ionized water and rich dye-based formulas. These inks are safe for fountain pens and offer a bold, consistent flow with low sheen and minimal shading. The product lines include the Delicious and I.COLOR.U series, both praised for their deep, expressive colors like Americano, Black Moss, and Marine Green.

Each ink bottle features a unique angled corner, making it easier to fill from low ink levels. Select lines, such as the Hun Min Jeong Eum collection, are inspired by Korean culture and honor the beauty of Hangul, the Korean writing system.

Trusted by fountain pen users around the world, 3 Oysters combines innovation, aesthetics, and cultural tribute in every bottle.