The corrupted crystal that you obtained is the wrong type, so Lamberteint directs you to a colleague who can help you find what you need.
This quest is available if you have completed the quest With the Utmost Care.
Starting the Quest
Talk to Lamberteint in the westernmost building on the lower level of Camp Drybone in Eastern Thanalan to begin the quest.
Speak with Ceana in Aleport
Go to Aleport in Western La Noscea and go up the eastern ramp. Talk to Ceana to hand over the Warded Pot and complete the quest.
Next Main Scenario Quest
After you complete the quest, you will need to be at least level 42 to proceed to the next quest. After you reach level 42, talk to Ceana to accept the next quest: It's Probably Not Pirates.