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.
Width: 0.71cm
Height: 0.71cm
Depth: 14.2cm
Materials: 40% Abs Plastic
Available Colors: Black, Navy
Mainland UK delivery
The product lead time for Mainland UK delivery is approximately 10-15 working days from artwork approval. Delivery is confirmed upon receipt of signed artwork approval. Any changes to artwork may impact delivery dates. If you require an express delivery, please contact our sales team. Express products typically have a one colour imprint only. For more information please refer to our Delivery Guide.
International Delivery
International delivery may incur additional costs. Please contact the Redbows sales team for a more detailed quote, including any additional delivery costs.
Plain Stock
Depending on quantity required and stock levels, plain stock items are usually despatched within 48hrs. For a larger plain stock order, delivery dates are confirmed by our sales team.
The Redbows Design Studio can quickly generate a virtual visual showing you how your artwork will look on your chosen item. All you need to do is send us your logo in a suitable format – preferably a JPEG, GIF or PNG file and we can then proceed to provide a proof for you. We will then email you back an electronic proof in a pdf format to view.
