Tom's Studio Iris Fountain Pen Ink – featuring the packaging, bottle and a swatch on paper

Fountain Pen Ink - 11 Iris

One of the rainbow’s most beautiful shades - a wonderfully rich purple.

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The finest British-made fountain pen ink suitable for all pens. Named for Iris, Greek Goddess of rainbows, this little bottle of goodness contains one of the rainbow’s most beautiful shades – a wonderfully rich purple.

Transform the way you create with an ink colour that sets you apart!

Most pens offer ink cartridges in a limited selection of colours. I want to change that by bringing you this range of beautifully rich and distinctive inks – with no need to dispose of or replace an empty cartridge.

These wonderfully free-flowing inks come in a number of beautiful and nuanced shades. They truly are a joy to write or create with!

  • Each bottle holds 50ml of ink, enough to keep you going for reams of writing, drawing, or doodling.
  • All of our fountain pen inks are water-based, acid-free, non-toxic and vegan.

Our fountain pen ink is compatible with all Tom’s Studio Pens, including calligraphy (The Flourish, Carrot, and Bloom), fountain (The Studio and Studio Pocket), and fineliner (The Lumos and Lumos Mini).


Fountain pen inks are highly 'layerable', allowing you to build different intensities or colours by applying more or less ink on the paper. Please note that the colour on the label may not perfectly represent the colour achieved when using different pens or techniques.


Because the ink has such a concentrated colour, you can dilute it with a smidge of water (ideally distilled) to create watercolour-like washes and depth of colour.

Shipping costs are calculated at checkout.

For dispatch times, customs details, and more, please visit our Delivery page. If you have any questions, feel free to reach out to us at hello@tomsstudio.co.uk – we’re here to help!

BUY 3 tom's studio fountain pen inks - save 20%

 
Tom's Studio Deep Black Fountain Pen Ink – featuring the packaging, bottle and a swatch on paper

Fountain Pen Ink - 01 Deep Black

Classical doesn’t have to mean boring, the very deepest of blacks.

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Tom's Studio Mallard Fountain Pen Ink – featuring the packaging, bottle and a swatch on paper

Fountain Pen Ink - 07 Mallard

A deep blue-green, like the plumes of a mallard duck

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Tom's Studio Marianas Fountain Pen Ink – featuring the packaging, bottle and a swatch on paper

Fountain Pen Ink - 14 Marianas

This deep blue ink reflects the ocean’s mystical depths.

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Tom's Studio Juniper Fountain Pen Ink – featuring the packaging, bottle and a swatch on paper

Fountain Pen Ink - 12 Juniper

What better inspiration than the Juniper plant, with its delicious bounty of deep purple berries.

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Customer Reviews

Based on 249 reviews
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A
Anne M.
A very happy friend

Bought these for a friend of mine who owns a Lumo since a while and she was really happy with my extra inks and tips..,

M
Marietta

I really like this color, it reminds me of the sea.

M
Marietta

I think this ink is an absolute treat, this is my regular and I feel that I love it.

M
Marietta

I thought this is coming off as green but for fine tips it looks black.

L
Laura L.
Beautiful inks, beautiful pens

I ordered the Loch Ness ink for my Wren pen, which I love for writing and sketching. I haven’t used the ink in my wren yet but I trialled it with a dip pen and it is a beautifully deep green-blue colour that flows evenly. I will be purchasing more to build up a collection of colours! Also - the ink reservoir in the Wren seems to go on forever, I’ve only filled it once a month ago and it’s still going strong through endless work and uni notes, and sketches!

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