Esterbrook x BUNGUBOX Kingfisher Edition Ink Bottle - Teal

A rich teal ink inspired by the Kingfisher’s colors. Smooth-flowing and vibrant, it’s ideal for writing, journaling, or creative projects. The color pops on paper without being overpowering, giving your writing personality and a refined, professional finish.

Who is BUNGUBOX?

BUNGUBOX is a beloved Japanese stationery boutique known worldwide for its carefully curated writing instruments and exclusive ink creations. Based in Hamamatsu, they’ve built a devoted following for their imaginative color stories and commitment to the art of writing. Esterbrook and BUNGUBOX previously partnered on the celebrated Kachofugetsu series, blending Japanese design sensibility with Esterbrook’s American heritage. Our newest collaboration continues that story, bringing together two brands united by craftsmanship, creativity, and a love of writing.

About the Kachofugetsu Collection

In Japanese, Kachofugetsu(花鳥風月)—Flower, Bird, Wind, and Moon—is a timeless expression honoring the natural world and its seasonal rhythms. Each release in this series is inspired by one of these elements and designed in collaboration with Kaoru Yamagishi, founder of BUNGUBOX, one of Japan’s most beloved pen boutiques.

What is DiamondCast?

DiamondCast is a unique, handcrafted resin made in small batches in the United States. Infused with real diamond dust, it creates brilliant depth, shimmer, and luminosity in every piece. Each blend is custom-poured, so no two pens are ever exactly alike. Esterbrook has partnered with DiamondCast on several special editions, pairing this striking material with our classic designs to create writing instruments that are as distinctive as they are beautiful.