Perovskite

A stone composed of calcium titanate. Functions as a transformational Catalyst.

Perovskite
Component used to upgrade weapons once max level has been reached.

Location
Perovskite can be found in multiple locations. In treasure sphere in Oerba and Mah'habara, it can be obtained in The Motherlode shop for 30,000 gil. Also, it can be obtained doing certain missions.