This page doesn't give any info about what to do with the item, i think you just get it from doing a quest thing "too much", i deleted mine.
As said in description, you can combine 3 items into one at the Fallen Fortress forge.
It doesn't really say that you need all three for it to work. Just says that you can take them there... Should be more specific. lol
Yeah, in Russian version of this quest description is more accurate. It says: "Obtain all three items and forge them into one at the Fallen Fortress forge".