9b11f552____Final_Fantasy_X_2_Item_List__Location
[Name] Baralai's Sphere [Description] Found in Guadosalam. [Location] 
Return to Guadosalam after getting the Episode complete screen during Chapter 5 and speak to Tromell. Enter through the door on the far left, (which was previously locked) and open a chest to receive the Sphere.
Final Fantasy World - Final Fantasy X-2 Item List
Location