Ballpoint Stone Pen – Marine · 14.2 cm | Karst

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Farbe | Color >> " Marineblau | Marine ":
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Description

KARST  ·  BALLPOINT PEN

A pen with character. In Marine.

Marine isn’t a neutral colour — and the Karst Stone Pen in Marine isn’t a neutral pen. Built from 60% calcium carbonate, the same mineral as Karst’s Stone Paper, cast into a completely different form. 14g, hexagonal body, matte finish. Swiss-made. A colour that stands out without being loud.

The Floating Ball® ink system dries on Stone Paper in 1–3 seconds (vs. 30+ for gel), writes up to 5,000 m, and delivers 200% richer ink density than standard ballpoints. Free from phthalates and harmful substances. Made in Switzerland.

Material60% calcium carbonate, 40% ABS
InkFloating Ball® 1.0 mm, Black
Dimensions142 mm × 7.1 mm
Weight14 g
FinishMatte, hexagonal body
ClipSteel
FormatStandard G2
ColourMarine (Ink: Black)
OriginSwitzerland

Does the Stone Pen work on regular paper?

Yes. The Floating Ball® system is optimised for Stone Paper but writes smoothly on regular paper too, leaving a rich, clean line. Drying time is slightly longer than on Stone Paper.

How long does the refill last?

Up to 5,000 metres — equivalent to 25 fully written pages of Stone Paper with consistent ink intensity, confirmed through testing.

Can I pair the Stone Pen with a notebook as a gift?

Absolutely. The Stone Pen in Marine pairs beautifully with Karst notebooks in complementary tones. Together, they make a complete writing system in one package. Find more combinations through the menu at charlesandmarie.de.

Is the Stone Pen sustainable?

It’s made with 60% calcium carbonate — no wood, no plastic as the primary material. Free from phthalates and harmful substances. Swiss-made to the highest standards.

The perfect complement to a Karst notebook — or a standalone choice for anyone who takes writing seriously.

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