He owns several successful businesses but this company is the 'jewel in the crown'. [=this company is the most valuable/important/admired]
The guests were heavily 'jeweled'. [=the guests were wearing a lot of jewelry]
The building is regarded as one of the 'jewels' of modern architecture.
(..) to your weapons presentation. Thanks. Is it better to be feared or respected? I say, is it too much to ask for both? With that in mind, I humbly present the crown jewel of Stark Industries' Freedom Line. It's the first missile system to incorporate our proprietary repulsor technology. (..)2008 Iron Man