Sustainability rating

Responsible ManufacturingMade under a recognised social-audit standard or in a European factory.
Positive Supply Chain ImpactBacked by Fair Trade, or by a social enterprise creating positive impact such as employing refugees or sourcing from artisan makers.

Karst®

Karst stone pen

The Karst stone pen is a Swiss-made writing instrument crafted with 60% calcium carbonate – the same core material as Karst paper – giving it a premium weight and perfectly balanced feel, around 50% heavier than standard plastic pens. Its Floating Ball® ink system delivers a smooth, bold line with up to 200% richer ink density and ultra-fast drying in just 1–3 seconds on stone paper, ensuring a clean, smudge-free writing experience. Designed with a hexagonal body, matte finish, and integrated steel clip, it offers comfort and control for everyday writing, sketching, or note-taking. Free from phthalates and harmful substances, the pen writes up to 5,000 meters and is built as the perfect finishing piece of the Karst writing system.

Colour · Navy

This option is currently out of stock, but we can still quote it.

Quantity

DecorationRecommended: Padprint

Attach artwork

Unit price: £15.55 · Line total: £3,887.50

Indicative at qty 250. We confirm final pricing in our quote.

The impact of this product

Every order through Social Supermarket funds real social and environmental impact. Here is what this adds up to.

x 250 units

178kg
of plastic collected from the ocean

About the impact

Our partner recovers plastic waste from the environment in the regions worst affected by pollution, funding ethical recovery before it reaches oceans, landfills or incinerators. This supports local waste workers with fair wages and safe conditions, while removing hard-to-recycle plastic and driving systemic change in how plastic is managed.