You give Ivory Crafter Lich Skull.
Ivory Crafter tells you, "Yes, I have found a use for these. I'll have to cleanse the skull first of course. Yech!!"
You've earned 2,500 experience.
Ivory Crafter gives you 3,000 Pyreals.
Ivory Crafter tells you, "I know of a sage somewhere in the southern mountain range that also collects these."