Welcome to the board Arknash!!!
I see you found your problem at Collasium!
Are you running the game with the patch? In the un-patched version the trip to visit Kerah is a once only opportunity. You've got a couple options here: install the patch and email me to give you the statue for the altar or email me to give you the clover stone for the Leprechaun quest.
Looks like you should just email me!
Wyv