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TWSBI Diamond 580 Rose Gold II Fountain Pen - Clear/smoke with rose gold trim

Original price $159.95 - Original price $159.95
Original price $159.95
$159.95
$159.95 - $159.95
Current price $159.95

Turn everyday writing into a ritual

The TWSBI Diamond 580 Rose Gold II combines translucent smoke resin with warm rose gold trim, creating a demonstrator that feels softer and more personal than the standard silver versions. The crystal clear barrel keeps the focus on the ink inside, while the darker cap and warm trim give the pen a calmer, more refined mood.

Built on TWSBI’s reliable Diamond 580 platform, it combines high ink capacity with a smooth, wet stainless steel nib designed for everyday writing.

What sets it apart

  • Rose gold trim gives a softer, more refined look
  • Smoke translucent cap obscures ink splatter to maintain neat visual appeal
  • Faceted barrel adds to the aesthetics and stops the pen rolling in the desk
  • A genuine step up from entry level fountain pens, without becoming precious

Feel in the hand

The visible mechanics make fountain pens feel easier to understand. Filling, cleaning, and writing all become part of the experience rather than maintenance tasks. The rose gold trim softens the technical feel and gives the pen a warmth the silver models do not have.

Who it’s for

  • Writers upgrading from an entry level fountain pen
  • Fountain pen users upgrading from cartridge pens
  • Users wanting to improve ink capacity, for everyday use or for travel
  • People who enjoy seeing the mechanical details 
  • Writers wanting their daily setup to feel more intentional

Not for

  • Writers wanting a very lightweight pen
  • People who prefer understated or opaque pen designs
  • Users wanting a snap cap for single hand use, instead of a screw cap
  • Those who never want to clean or maintain a fountain pen

Practical tips

  • The cap posts securely, though many users prefer the balance unposted

FAQs

Does the rose gold trim wear off?
With normal use, the plating holds up well. Like most plated finishes, it may wear slightly over years of heavy use, depending if you carry it a pen case or not.

Why is it called Rose Gold II?
The original, released in 2015, was a release to test the model concept, but experienced issues with the long term durability of the plating. Rose Gold II, is the re-release in 2020 which has proven robust and is the same plating as on the Eco range. 

Is this beginner friendly?
Yes, you dial in the ink at a slow pace, and will be writing for a couple of weeks before you have to refill. The pen box includes filling instructions.

How much ink does it hold?
The chamber can hold up to 1.9mL, which is 2-3 times a cartridge or converter.

How does it compare to Twsbi Eco?
The Diamond 580 feels more refined, with a more comfortable grip, screw-in nib units, and a more developed overall design. Eco is the simpler and more economical version.

What's the difference between 580, 580AL and 580ALR?
The 580 is the base model of the Diamond series. The 580AL upgrade includes more aluminium parts and the 580ALR also includes ribbing on the grip. Most new releases are in ALR.

Can you change nibs?
Yes, for the rose gold variant, Twsbi usually supply only the nib itself, so you will need to slide the original nib out of the nib unit and slide the new nib in.

Does it come with ink?
No, bottled ink is required. You can use any bottle ink labelled suitable for fountain pens.

Does it break easily?
No, not with the right care. Avoid over tightening the cap during daily use and minimise how often you disassemble the pen. 

How do you clean it?
Routine cleaning only requires you to expel the old ink and cycle water through the nib/barrel a few times before refilling. Disassembly for piston regreasing is only needed long term, and only if the piston becomes stiff.

What’s included

  • TWSBI Diamond 580 Rose Gold II Fountain Pen
  • Wrench
  • Silicone grease
  • Presentation box
  • Instruction leaflet
  • Free nib tuning from LarryPOST

Ink pairing suggestions

  • Warm browns, sepias, dusty pinks and burgundies
  • Deep blue-blacks
  • Olive greens

Build your practice

Specifications

  • Brand: TWSBI
  • Brand series: Diamond 580
  • Launch: April 2020
  • Origin: Taiwan
  • Nib: Stainless steel
  • Nib sizes: EF, F, M, B, 1.1 stub
  • Filling system: Piston filler (1.9mL)
  • Body: Transparent polycarbonate
  • Trim: Rose-gold coloured plated stainless steel
  • Cap: Twist
  • Grip: approx. 10mm
  • Diametre: approx. 13mm
  • Length: approx. 142mm (capped)
  • Weight: approx. 29g (capped)
  • Comparable size: Pilot Custom 74, Lamy Studio

A demonstrator that balances practicality with warmth, making everyday writing feel more personal and more intentional.

 

Nib Size: Extra Fine

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