Ekdikasi

Ekdikasi (Εκδικαση, Ekdikasi̱ ) was a Sword crafted by Zagreus from the power of the Protogenoi Ouranos and given to his new Lord of the North, the God Asclepius, who served as one of his most loyal servants and protector.

As it is linked to Keraunos, the sword wielded by Zagreus, it is implied that Idiotita and its siblings are made of the Diamond-like Adamant material found in the Heavens. Idiotita itself seems to be made of a large sapphire-like material, and its square hilt has four shaped sapphires in it.

Trivia

 * Ekdikasi is a Greek word meaning "trial".