Karst - Stone Pen

Swiss-made and crafted with calcium carbonate – the same core material as our paper - Karst Stone Pen brings premium weight and balance to every stroke. Floating Ball® ink system delivers what Stone Paper demands: smoother flow, a bolder line, and ultra-fast drying, with up to 200% richer ink density, and exceptional performance on regular paper. The finishing piece of the Karst writing system and the pen you’ll reach for every day.

• Swiss-engineered with a hexagonal body for comfortable extended writing, a matte finish for secure grip and an integrated steel clip for effortless everyday carry. 
• 50% heavier than standard plastic pens. Crafted with 60% calcium carbonate for perfect weight and balance. * Free from phthalates and harmful substances – designed to be safer for people and the planet.

• Floating Ball® ink system dries in 1–3 seconds on Stone Paper (vs 30+ for gel) with smoother flow, bolder lines, and zero smudge.

• Writes up to 5,000 meters, with testing confirming consistent ink intensity across 25 full pages on Stone Paper.