Extremely high-quality parts that can be used when building machinery. Technology has advanced to a certain point already, as can be seen in the success of Dilmagea's airships, but it is still difficult to make components of this high of quality. This has led to some rather convincing theories about such parts coming to our world from some other world or being relics of some advanced civilization from the past.
How to obtain
Level Rank Round Monster BGN C 4 Abtu BGN B 1 Desert Sahagin
BGN A 2 Merman BGN A 3 Ice Sculpture
BGN A 5 Epimetheus BGN S 1 Cactuar
BGN S 3 Yellow Jelly ADV S 1 Cactuar