Skull-melting utilizes a crucible-like structure to surround the raw material.
After heating up by an inductive electromagnetic field melting of the raw material is forced up to 3000°C.
Due to the cooling structure, the molten material is contained by a thin shell of its own composition, which could be considered "skull"-like.
During slow cooling complete crystallization occurs. The resulting ingot consists of several multifaceted rough single crystals which have to be separated.