Phrik

"What the phrik?"

- General Grievous

Phrik was a metal capable of deflecting lightsabers. Because of this, it was used to build electrostaffs. It was inferior to cortosis, since it merely blocked the lightsaber's impact instead of short-circuiting it.

A container made of phrik was left on Alderaan when the planet was destroyed by the Death Star. Somehow, the container survived the explosion and collisions with the other bits of debris long enough for it to be found by a passing ship. This, sadly, is canon.

Not to be confused with kriff.