A mini ink sample bottle of Neptune blue fountain pen ink by Tom’s Studio, displayed alongside a swatch of the ink on textured paper and its matching packaging. The bottle is small, with a gold cap and a white pipette dropper, and features 'Tom’s Studio' in gold lettering. The ink swatch shows a rich, shimmering hue with a gradient from deep to lighter tones. The packaging, a small white card, has 'Tom’s Studio' embossed in gold at the top, with a brushstroke of the ink colour at the bottom.
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
A mini ink sample bottle of Neptune blue fountain pen ink by Tom’s Studio, displayed alongside a swatch of the ink on textured paper and its matching packaging. The bottle is small, with a gold cap and a white pipette dropper, and features 'Tom’s Studio' in gold lettering. The ink swatch shows a rich, shimmering hue with a gradient from deep to lighter tones. The packaging, a small white card, has 'Tom’s Studio' embossed in gold at the top, with a brushstroke of the ink colour at the bottom.
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 - 03 Neptune

5ml fountain pen ink in Neptune blue

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

Being just minutes from the beautiful Dorset coastline, this ocean-blue ink is sure to remind you of home. For lovers of the sun, sea, and sand, enjoy – Neptune’s vast oceans in a bottle.

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 5ml of ink.
  • Each ink comes 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.
  • All of our fountain pen inks are water-based, acid-free, non-toxic and vegan.

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.

Shipping costs are calculated at checkout.

For dispatch times, customs details, and more, please visit our Delivery page. Got a question? Just reach out via our Contact form – we’re here to help!

Also available in 50ml

Customer Reviews

Based on 131 reviews
90%
(118)
7%
(9)
2%
(3)
0%
(0)
1%
(1)
C
Caroline L.
Sunny teal ink

The ink was a beautiful color with no smudging and have bought more colours,

T
Tracey B.
Rambling Rose Ink

It's a very strong and beautiful pink. Think peony.

K
Kris K.
Fun and vibrant color!!

This is a fun and vibrant color!!

S
Susanne H.
Mini Fountain Pen

Delightful small pen with a lovely range of coloured inks . Free-flowing and great recycling for the case.

a
a.C.

Lovely colours not used yet but it will be jolly when i fo!

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