TWSBI 580 Iris
TWSBI 580 Iris Fountain Pen
TWSBI Diamond 580 Iris

TWSBI Diamond 580 Iris Fountain Pen

Regular price$80.00


The TWSBI Diamond 580 comes with a benchmark piston ink-filling mechanism and has all detachable parts.

This fountain pen features a clear demonstrator body with rainbow-colored iridescent trim and a stainless steel nib accented with iridescent color. The clear demonstrator barrel allows you to see your ink color and remaining ink level. It has a clear grip section and screw-cap, and is presented in a modern clear display case.

The idea behind the TWSBI Diamond 580 was to go back to basics and capture the simplicity and elegance of traditional writing instruments. In recent years, the development and modernization of writing instruments has resulted in traditional writing instruments, such as fountain pens, falling into obscurity. It was TWSBI's goal to bring the past back to life by creating a traditional fountain pen that even modern day society can appreciate.

The TWSBI Diamond 580 is a classic fountain pen with a piston ink-filling system. By fusing the traditional mechanisms of the fountain pen with a modern industrial design, TWSBI has created an eye-catching fountain pen that is simultaneously appreciative of the past and relevant in the present.

TWSBI's belief is that it is important to allow the user to disassemble and reassemble the pen and completely experience the traditional aspects of owning and using a fountain pen. These pens also come packaged with a wrench and silicone grease. Neither of these accessories are intended to be used immediately, as they are for long-term care and maintenance. Additionally, please use extra care if you choose to disassemble the nib and feed, as the feed is very fragile.

Product Specifications
Capped Length: 5.6 in.(142.2mm)
Length of Body: 5.12 in.(130.0mm)
Length of Cap: 2.36 in.(59.9mm)
Diameter of Body: 0.52 in.(13.2mm)
Diameter of Cap: 0.57 in.(14.5mm)
Diameter of Grip: 0.4 in.(10.2mm)
Weight: 1.0 oz.(28.35g)

Body Material: Resin
Trim Material: Chrome Plated
Section Material: Resin
Nib Material: Stainless Steel

Fill Mechanism: Piston
Cartridge Type: Bottled Ink
Cap Rotations: 1.25
Cap Type: Threaded
Postable: No
Demonstrator: Yes
Clip Style: Spring Metal

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Customer Reviews

Based on 3 reviews
Paul McHugh
Beautiful pen

The only complaint, if you can call it that, is the size of the nib. I only wish it was a #6 size. Other than that, it writes well. Can't get over the colors. Keep looking at the pen, even when it is not in use.

Joseph Lugo

TWSBI Diamond 580 Iris Fountain Pen

Michael L.
Diamond 580 Magic

The Diamond 580 is one of the best pens on the market. Amazing writing experience, looks amazing with the Diamond cut barrel and the sealing system keeps your ink fresh for a very long time. I own a lot of Diamond 580 and Diamond 580ALR pens in various sizes. An iris colored pen really like this is a great addition to the line up and to my collection. Thanks TWSBI!

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