Adamantine

Adamantine, when smelted, was ultra-hard but this was a costly procedure. Adamantine weapons were useful for damaging the weapons and armor of opponents. A set of adamantine armor or a shield was nearly impenetrable to normal weapons.

Naturally occurring adamantine was mostly found in meteorites and rare mineral veins.   Adamantine was extremely difficult to produce, requiring high forging temperatures and a very delicate procedure. Most smiths that specialized in producing adamantine were dwarves, particularly those from the ancient kingdom of Ammarindar.   It was also possible to produce adamantine as an alloy of mithral and steel through the application of several magical procedures, although the process to do so was exceedingly complex.