Item from Harry Potter by J.K. Rowling
A beautiful silver tiara inscribed with 'Wit beyond measure is man's greatest treasure' — Rowena Ravenclaw's lost diadem, turned into a Horcrux by Voldemort and hidden in the Room of Requirement.
Also known as: Ravenclaw's Diadem, the Diadem, the lost diadem, Rowena Ravenclaw's diadem