One of the most common stones for sauna stoves. It is heated evenly throughout its mass and has the same thermal expansion coefficient in all directions. Gabbo-diabase accumulates heat quickly and holds it for long. It is easy to lay this stone in stoves thanks to its slightly flattened shape Gabbro-diabase consists of plagiclase, pyroxenes, amphiboles, and titanomagnetite. None of these minerals contains impurities. Based on its nuclear and hygienic properties, it is classified as the 1st Class material.
Density: 2790 to 3300 kg/m3.
Specific heat capacity: 0,79 kJ/kg°C
Compressive strength: 311 MPa
Melting point: 1200 °C.