Kratonite dagger

The kratonite dagger is a tier 4 dagger, found only in Daemonheim. It requires level 30 Attack to wield. It can be made from one kratonite bar, requiring level 30 Smithing and giving 37 experience. It is a possible drop from the Luminescent Icefiend, as well as many other monsters.

Dropping monsters
Kratonite dagger