What is the Karolos Glintstone Crown and where do I find it?

The Karolos Glintstone Crown is a headpiece required to solve the “May Erudition Light the Way” puzzle. It can be found in the Raya Lucaria Academy, specifically by defeating a small crab with a blue glintstone in its shell in the courtyard near the Debate Parlor Site of Grace. This crown is essential for performing the Erudition Gesture correctly.