Defeat Iron Garubian around ShipGraveyard inside Celestine Caverns and talk to Scorpion Lure at the Scorpion Campgrounds. Use your quest tracker to see your progress.
Scorpion Lure: You can find caelium at the entrance of these Scorpion Lure: caverns. They're nice, but not as valuable as the ones Scorpion Lure: closer to the Ship Graveyard. NakanoAzusa: I'd imagine less people would venture that deep NakanoAzusa: into Celestine. Scorpion Lure: I think it's mostly because of the iron garubians in Scorpion Lure: those parts. HiiragiKagami: Those cute little turtles? Scorpion Lure: Yes. Do you remember the garubians in the Valley of Scorpion Lure: the Void? these are much tougher. NakanoAzusa: I think I can take them on. Scorpion Lure: Do you really think so? You can go ahead and test Scorpion Lure: your strength, young Aitan.
Reminder Dialog
Scorpion Lure: Look for the iron garubians at the Ship Graveyard.