on saleDiamine Prussian Blue - Ink Sample

Product Code IS-D7018

In Stock

out of stock

on saleDiamine Prussian Blue - Ink Sample

Product Code IS-D7018

In Stock

out of stock


2ml sample of Diamine Prussian Blue fountain pen ink, in a labeled plastic vial.

Ink Samples
Fast Drying

Whether or not the ink contains glittery particles.

Freeze Resistant

Whether or not an ink is specially formulated to better withstand freezing temperatures.

Iron Gall

Ink made from iron salts and tannic acids. Though quite permanent and waterproof, these inks are typically known for causing chemical corrosion to metal pen parts (especially the nib) and should be used sparingly or with less-valuable pens.


Whether or not an ink is specially formulated to increase flow in your pen.


Whether or not the ink contains finely-ground solid particles in liquid suspension.

Water Resistant

Whether or not the ink, once dried on the paper, will resist being washed away with water.


Customer Reviews

Based on 10 reviews
Grant H.
Finally found the perfect blue-black

I prefer blue-black on the grayer side and this is exactly what I got. Diamine makes some excellent colors and this is not exception. This, and Terracotta (also from Diamine) are worth trying if you haven't.

Yolanda A.
Beautiful ink!!!

Such a beautiful ink!!!

too gray; a bit dull

I tried this in an italic and a fine nib, and it's too gray for my tastes. The ink on the page looks watery, like it's been diluted. I wouldn't really use this color when there's so many beautiful saturated colors to choose from (even saturated grays are better).

Greg M.
In search of: very dry inks that look good

I have a new Delta pen that is extremely wet. Before I send it off to have the flow reduced, I wanted to see if any of the current very dry inks on the market would tame the hose.Based on recommendations from FPN, I selected Prussian Blue among several others in a batch of samples. The ink is indeed very dry, and I like the color a bit better than traditional blue-black inks. Prussian blue is a bit more blue than b-b inks, and doesn't change color over time (so far) like b-b's I've tried.R&K Scabiosa is the only ink I've found so far that is significantly drier than Diamine Prussian Blue, but isn't as much of a work color. I can definitely recommend Prussian Blue when you want a dark blue to slow the flow.

Great color

Great color, but wish it was a bit better behaved and didn't feather and bleed through as much on cheaper paper.

FAQ about Ink Samples

How do I fill my fountain pen from an ink sample vial? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the fountain pen's filling mechanism.

Check out our blog post on How to Fill a Fountain Pen from an Ink Sample Vial.

How much writing can I do with 2ml of ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It really depends on how big or small you write, and the nib size you’re using. We find that usually you can get 2 good fills for a typical converter with our Ink samples, or one good fill with a piston-filling pen. How much writing depends on you more than anything else, so we recommend experimenting with different nib sizes to find what works best for you. 

What is shading, sheening, or shimmering ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Shading - A common (and often desired) result of a fountain pen ink pooling in certain parts of a letter when writing, so that the color and saturation of the ink appears different within a single letter or word. This characteristic cannot be achieved with ballpoint or rollerball pens and is a very appealing aspect of fountain pen use for those particularly drawn to all the pretty ink colors.

Sheen - Characteristic of a fountain pen ink where when ink pools another color can be seen on top of the ink, especially when looked at in different light angles using certain paper types. There is no way to guarantee an ink will sheen, but using a larger nib on a pen will help obtain sheening results in your writing.

Shimmering - Fountain pen ink that has small particles of glitter mixed in.

Is shimmering ink safe to use in fountain pens? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Yes! Shimmering ink is a great way to add some flare to your writing. We have found that a larger nib will showcase more shimmering particles while writing, but you can use any nib size and shimmering ink. All the ink we sell is safe for use in fountain pens.

You can learn more in our blog: How to Write with Shimmering Ink.

What's your return policy for ink samples? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We do not accept returns for ink that has been used. Otherwise, we accept returns on unused ink products for up to 30 days from purchase. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.