Esterbrook x BUNGUBOX Kingfisher Limited Edition Estie

The Kingfisher Estie combines deep teal, warm copper, and soft black Diamond-Cast resin for a bold, eye-catching look. Gold-plated trim and a specially engraved nib add a touch of refinement. Smooth, reliable, and designed to be a joy to use, this pen brings everyday writing to life with style and quality. 

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.

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.