Crag Heart

Crag Heart is stone.

Source
Crag Hearts can be obtained as a drop from a duty or purchased from vendors.

Duties
Crag Hearts can be obtained as a drop from the following duties:
 * The Navel (Extreme)

Vendors
Crag Hearts can be obtained during the Moogle Treasure Trove event by exchanging 4 with the following vendors:
 * Itinerant Moogle

Uses
Crag Hearts are used in crafting the following items: