Ivory Pendant
 

Dropped on Island 1 from the Princess, it should only drop on Island 4 (a Soul Carrier, an Essence Carrier, a Soul Tamer or an Essence Tamer).

bump, this thing seems to drop in places of other random rare loots in sky, got it off bosses a couple times now.

Fixed, pending update.

Next patch it will only drop from:

an_essence_carrier
an_essence_tamer
a_soul_tamer
a_soul_harvester