Coronet (noun)

1. A small crown, typically worn by a member of a royal family or a person of noble rank.
2. A small crown worn by a person of noble rank, especially a minor member of a royal family.

Origin:

From the latin word "corona" meaning "crown" and the diminutive suffix "-et" meaning "small".

Examples:

1. She wore a coronet of diamonds on her wedding day.
2. He was given a coronet as a symbol of his nobility.
3. The coronet is a small crown worn by a member of a royal family.
4. The coronet is often made of precious metals and decorated with jewels.
5. The coronet is a symbol of nobility and rank.