Soot-Covered Ruby  

 

This is found in the instance for the mission "Darkdawn #2: Altar Call."

To get it, click the giant crystal in the caves -- located on the north/east side of Suncrest Isle.

It is a task item for the the task called, "No Small thing."

It is used in a smithing combine to make "Marnek's Wand of the Burning Dead."