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.
(..) you've got to rock the block " " You fucking suck my fucking cock " " 'Cause when you rule, you fucking school " " All of the fools out of their jewels " " 'Cause if you think it's time to, if you think it's time to " " If you think it's time to fucking ro-ock " " He is going " (..)2006 Tenacious D in the Pick of Destiny