IPA: /ˈdʒuːəld/
KK: /ˈdʒuːəld/
Describing something that is decorated with jewels or precious stones.
The bride wore a beautiful jewelled tiara on her wedding day.
Jewelled → It is formed from "jewel" (from Old French *juel*, meaning precious stone or ornament) and "-ed" (a suffix indicating possession or being characterized by). The word "jewelled" means characterized by the presence of jewels or adorned with precious stones.
Think of a precious stone ('jewel') that makes something beautiful, and remember that 'jewelled' means something that is adorned with jewels.