What's this for?
 

"Equestrielle's Eye"

http://everquest.allakhazam.com/db/item.html?item=6752

Got it off that unicorn in Lfay. Is it for a known quest? From the comments I think it may have been for something but no one ever figured out what.

Check here: http://oldunsolvedquestsineverquest.yuku.com/

Edit: Looks like someone already posted it there heh, oh well.