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Wavy black line on a white background. Diamine Onyx Black fountain pen ink colour swatch.
  • Wavy black line on a white background. Diamine Onyx Black fountain pen ink colour swatch.
Diamine Fountain Pen Ink Cartridges 18 Pack - Onyx Black

Diamine Fountain Pen Ink Cartridges 18 Pack - Onyx Black

£5.58

European Standard sized cartridges in Onyx Black, pack of 18 pcs.

A select range of the most popular Diamine Fountain Pen Ink colours in European Standard sized fountain pen cartridges. 


Water-based, non-toxic, acid-free and vegan-friendly. The only go-to for any brand of fountain pens, especially vintage models.

Reliable shipping

Flexible returns

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