Item White ID: 56181

[Guild] Black Crystal Cannonball

A crystal you can obtain from destroying black crystal Knowledge Item seaweeds summoned by Khan. According to the records, it was discovered by one of the Vell Pirates, between broken black crystal seaweeds near an unknown island. The unusually hard and heavy black crystal was simply treated as a strange stone without much use. However, they discovered its usefulness one day when the pirates ran out of cannonballs as they engaged in a fierce battle against a sea monster in Margoria Sea. Struggling to survive, they started using anything on the ship to replace cannonballs and one of the sailors grabbed the black crystal seaweed NPC Knowledge. To their surprise, the black crystal seaweed pierced through the sea monster's head, which no other cannonballs could do. They say the pirates headed back to the unknown island in order to obtain more of this incredibly strong cannonball Knowledge Item, but the island was never found.

Black Crystal Knowledge Item Cannonballs are much more powerful than [Guild] Monsterbane Cannonballs.
A cannon can only be fired when it's loaded.