1. A precious or semi-precious stone, or an ornament made of such stones and metal, worn for decoration
She wore a beautiful diamond jewel on her neck.
Ela usava uma linda joia de diamante no pescoço.
2. Something precious, valuable, or highly esteemed; a treasure
That painting is a real jewel in the museum's collection.
Aquele quadro é uma verdadeira joia na coleção do museu.