Luna Suggests the Lost Diadem of Ravenclaw

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Luna Lovegood suggests that they look for Ravenclaw's lost diadem, an ancient magical object that could be the Horcrux they are seeking. She offers to take Harry to the Ravenclaw common room, where there is a statue of Rowena Ravenclaw wearing the diadem. Harry feels urgency as he experiences another wave of pain from his scar, realizing that time is running out.