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Quantity
1
Description
4.8
6 ratings
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My new favouirite ink
I love this ink and now use it exclusively as a "blue-black". I am a big fan of Registrar's ink (as used by British registrars for birth certificates etc.) but am afraid to use it in my good pens for fear of damage caused by iron-gall. Most blue-blacks are too dark for my taste, but Diamine Prussian Blue is a lighter, greyish colour, and is wet enough to flow well in my pens without being gushing. It looks lovely on the page, and I can use it for notes even on cheap copy paper.
Paul · March 6, 2026
Diamine Prussian Blue Review.
At first, I was a bit disappointed, the ink appeared more grey than blue. However, after the ink dried, the color took on a more blueish appearance with a noticeable touch of grey. I really enjoy the color and I now use this ink for my daily pen.
Joseph · April 11, 2022
My new go-to
This is an awesome ink. It's hard to find a darker blue-black that has nice shading. This ink performs well on all papers I have tried it on so far. A must for every pen enthusiast!
Spencer · January 6, 2022




