What is another word for crown jewel?
Pronunciation: [kɹˈa͡ʊn d͡ʒˈuːəl] (IPA) 
The phrase "crown jewel" is often used to refer to something that is a critically important or valuable asset, typically the best or most significant of its kind. Some synonyms for this expression include "pearl," "treasure," "gem," "pride and joy," "cream of the crop," "showpiece," "masterpiece," "jewel in the crown," and "flagship." These terms are usually applied to things that are highly prized and sought after, be it a physical object, a place, or a person. For instance, a famous museum's most valuable artwork could be referred to as its crown jewel, or a company's most profitable product or service could be called its flagship offering.
