Basalt knitted fabrics are made from stone fibre that is obtained from the volcanic basalt. It has a melting point at 1450°C. The material is available in various knits and incombustible (A1 according to DIN 4102). The strength and elongation of basalt fibres is 15 per cent higher than glass fibres.

The material has a good drapability, for example as reinforcement fabric in the maritime branch. Basalt prevents algal growth and extends the potential residence time in water. Basalt also has a low thermal conductivity and a high electrical resistance.