Tom's Studio Marianas Mini Fountain Pen Ink – featuring the packaging and bottle with pipette in lid
Tom's Studio Strawberry Jam Mini Fountain Pen Ink – showing the pipette built into the lid for easy application
A selection of Tom's Studio Mini Fountain Pen Inks packaged in a candy-stripe paper bag
Tom's Studio Marianas Mini Fountain Pen Ink – featuring the packaging and bottle with pipette in lid
Tom's Studio Strawberry Jam Mini Fountain Pen Ink – showing the pipette built into the lid for easy application
A selection of Tom's Studio Mini Fountain Pen Inks packaged in a candy-stripe paper bag

Mini Fountain Pen Ink - 14 Marianas

5ml fountain pen ink in Marianas blue

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The finest British-made fountain pen ink – now in a mini 5ml sample bottle!

Named for the deepest point of the ocean (the Mariana Trench) this deep blue ink reflects the ocean’s mystical depths.

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.

  • Each bottle holds 5 ml of this lovely ink.
  • All our inks are water-based, acid-free, non-toxic, and vegan-friendly.
  • Each ink comes beautifully presented in a dinky glass bottle with a handy pipette for easy application.
  • Every mini ink is bottled by hand by the Tom's Studio team and packaged in a hand-painted cardboard sleeve.

Specifications:
Bottle

  • Height (with lid) 62mm
  • Diameter (at base) 20mm

Packaging

  • Height 82mm
  • Width 52mm
  • Depth 20mm

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), fineliner (The Lumos and Lumos Mini) and the Wren.

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.

We aim to process your order within 1-3 working days. Please note that this increases to 1-4 working days for orders that include any personalisation, such as engraving.

Shipping costs
Shipping costs are calculated at checkout.

Delivery times

  • UK: 1-2 business days
  • Europe: 3-5 business days
  • USA: 5-7 business days
  • Rest of world: 8-10 business days (duties may apply on delivery)

Please refer to our Delivery page for more information, and reach out to us at hello@tomsstudio.co.uk if you have any further questions.

Also available in 50ml

Customer Reviews

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M
Michelle S.

Lovely color

J
Jennifer T.
Cute little ink!

I appreciate the mini sizes because I love having options! The ink is very high quality, and Marianas is a perfectly classic blue.

J
Jane P.
Great Ink and great colour too

I bought this little bottle because I like the more unusual colours of ink but thought I’d best have a “standard” blue too. It’s a wonderful deep blue, great consistency and it flows from the pen nib beautifully too. I’ve been testing it in my Lumos pen but can’t see why it wouldn’t work as easily in a standard fountain pen, I just need to buy a bigger bottle now!