Tooth of Toamowhai

 is a necklace in.

Usage

 * Talk to Izzia in Marihi's Metalwork, Periki's Overlook to combine this item with either Neriscyrlas' Hope or  Weight of Revelation to create the  Chain of Rightful Authority, which can then be combined with the remaining piece to create the  Crown of the Exiled Queen. Otherwise you can combine all three (hope, tooth, and weight) to create the crown directly.