Cabirium

Cabirium was one of the rarest ore in the galaxy. It had electromagnetical properties, and was extremely hard. However, it was very sensible to blaster bolts, and would be consumed by the shots.

A gigantic block was hid by the Kanduh on a unindentified planet in the Halawee system millenia before the Galactic Civil War. The Imperial Intelligence manipulated the Alliance to Restore the Republic in order to discover the ore for the benefit of the Galactic Empire. Unfortunately for the Imperials, the Rebels managed to destroy the treasure.