Hermetium is an ancient and mysterious alloy of unknown composition. It is known to be largely made of aluminum and to contain some carmot and neon. Hermetium appears as a deep violet, lustrous metal.
Its melting point sits around 60 000ºC. It cannot be fractured by any amount of force, and it can only be scratched by minerals with a hardness above that of boron nitride. It almost impossible to bend it as well, and it has some plasticity. Only aqua regia can oxidize it, which will lead to the creation of a few white sparkles on its surface, with negligible damage to the material.
The thermal conductivity of hermetium is very high, while the electrical conductivity is lower than most metals (though still higher than other materials).