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TWSBI Diamond Mini Fountain Pen - Classic

TWSBI

$55.99
(1 review) Write a Review
Pen Type:
Fountain Pen
Nib Material:
Steel
Filling Mechanism:
Piston
Trim Color:
Silver
Cap Closure:
Threaded
Pen Model:
Mini
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The TWSBI Mini fountain pen in Classic features a clear acrylic body, black cap and turning knob, silver trim, as well as a piston ink-filling system, smooth-writing steel nib and a screw-on cap. The cap of the TWSBI Mini fountain pen screws on to the end of the barrel to post. This pen runs smaller in length than the Diamond 580.

The TWSBI Mini piston ink-filling system uses only bottled ink and the clear body allows the user to view the level of ink remaining in the pen at all times. The pen cap has an inner cap liner that maintains a thorough seal when the pen is not in use. The traditional mechanism of the fountain pen, combined with a modern industrial design, embodies both the past and the present.

Replacement TWSBI Mini nib units are available in several nib sizes. Please make sure to choose the TWSBI Mini nib, for the correct fit.

We offer Free Shipping on all orders over $69 for US customers!

 

TWSBI believes that it is important to allow the user to disassemble and reassemble the pen, in order to completely experience the traditional aspects of owning and using a fountain pen. The TWSBI pen packaging includes a wrench and silicone grease.

** Please note that these accessories are not intended to be used immediately, as they are better used for long-term care and maintenance. In addition, please use extra care if you choose to disassemble the pen, as breakage or cracking could occur if done incorrectly.

 

1 Review Hide Reviews Show Reviews

  • 5
    Fills the bill

    Posted by Robert Grizzard on Apr 28th 2026

    I got this to use for doing crossword puzzles. I've been working crossword puzzles with a fountain pen for several years now, looking for the right pen. And I think this one is it. Nice line, control of ink flow so it doesn't bleed through, and smooth even on the pulp paper that crossword puzzles are printed on. I have had the best results with iron gall Platinum inks and a Western fine or Japanese medium nib.

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