Red Starstone

The  is a currency item in Lineage 2: Revolution.

When donated to a clan it can be used by the clan leader to reset the clan dungeon before weekly reset.

Summary
Any mob with the title above their name 'Evil of Blood' will have a chance to drop both Proof of Blood and Red Starstone.

For a list of elite dungeon mobs that drop these currencies, see Proof of Blood.