Oh no, Spiruna's Black Crystal is cracked! She needs it to breathe life into all of her spells. I understand you may have wrongfully been accused of this, but right now nothing will calm Spiruna down. There's one item, though, that can fix the cracked Black Crystal. If you can get me that, Spiruna won't be so mad after that...

It's an item called Fairy Dust. It's a collection of dust the fairies create whenever they flap their wings. That's the only thing that can restore the Cracked Black Crystal to its original state. So many people have been looking for it these days that it may not be easy to obtain. Anyway, look for Kriel the Fairy at the Orbis market and ask her for it.