Sorcerer Thops's bell bearing, found upon his perished flesh. Offer to the Twin Maiden Husks at the Roundtable HoldLandmark to gain access to new items.

Looted from Thops's body. You must give him the Academy Glintstone Key first. Once he has it, fast travel to the Schoolhouse ClassroomGrace site of grace of Raya Lucaria AcademyDungeon, you'll find him dead outside the room. Go outside and turn right, you'll find him, sitting in a chair. He also drops this if you kill him, instead of giving the key.