Esterbrook x BUNGUBOX Estie Diamondcast Fountain Pen – Kachofugetsu Collection – Kingfisher – Limited Edition

Esterbrook x BUNGUBOX Estie Diamondcast Fountain Pen – Kachofugetsu Collection – Kingfisher – Limited Edition

This limited-run pen features hand-blended DiamondCast material made in North Carolina, USA. 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.

The Kingfisher Estie combines deep teal, warm copper, and soft black DiamondCast resin for a bold, eye-catching look. The pen features gold-plated trim, a specially engraved nib, and the included converter is designed with Kingfisher bird details. The rest of the Kingfisher collection includes an enamel pin, blotter paper, and ink with artwork of the Kignfisher bird which inspired this pen.

In Japanese,Kachofugetsu()Flower, Bird, Wind, and Moonis 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 Japans most beloved pen boutiques.

The Esterbrook Estie is part of Esterbrook’s classic core collection of fountain pens. Made of acrylic, it is well-balanced and comfortable to hold both unposted or posted for a larger feel. The cap features a spring-loaded mechanism to help prevent the nib from drying out.

• Second edition in Kachofugetsu Collection
• Release date: August 2025
• Gold Trim
• Steel JoWo #6 nib
• Compatible with international standard cartridges/converters
• Hand-blended DiamondCast resin
• Cushion cap screw closure
• Interchangeable nib system, compatible with all Estie nib units
• Specially engraved nib with Japanese character for “bird”
• Includes one black cartridge, Kingfisher bird detailed converter
• Spare nibs available inPalladiumandGold
• More Esterbrook

Estie Dimensions:

• Length Capped:
• 15.0 cm / 5.9 inches
• Length Posted: 17.0 cm / 6.7 inches
• Grip Section Diameter: 1.11 cm
• Full Diameter: 1.54 cm
• Weight: 23g

About Esterbrook:

Esterbrookbegan manufacturing nibs in the US in the mid 1800s, but the 1930sweremonumental for them,as they introduced their first interchangeable nib systemin 1933.The interchangeable nibs gave the user many options for writing, whetherin school, business, or for personal use.Today, asimilarsystem isreborn with theEstie and Esterbrook’s specially engineeredMV Nib Adaptor, whichdelivers a vintage nib experience with a modern shape Esterbrook pen.