diadem
/ˈdaɪəˌdɛm/
noun
- A small crown or jeweled headband worn as a symbol of royalty or honor.
- The queen placed a golden diadem on her head for the coronation.
- In the museum, we saw an ancient diadem studded with emeralds.
- She wore a simple diadem of silver leaves to the formal ball.
- Something that crowns or adorns like a crown; a crowning achievement or feature.
- The garden's diadem was a fountain surrounded by roses.
- The mountain peak was a diadem of snow against the blue sky.
- Her latest novel is the diadem of her literary career.