Adamantite - Final Fantasy XVI Database

In-game Description

One of the hardest known materials in the Twins. Seams of its ore have only been found in the far-flung reaches of Ash, where the forces of first Veldermarke, then Waloed, often warred with the ores who claimed the lands as their own. Though the metal makes for fine arms and armor, the rarity of both its ore and craftsman versed in the peculiarities of its forging ensure that adamantite weapons remain the preserve of the rich and powerful.