Descriptive:
* "O le mea e matagofie" (literally "the thing that is beautiful")
* "O le mea e taua" (literally "the thing that is precious")
* "O le mea e iloga" (literally "the thing that is prominent" or "stand out")
Metaphorical:
* "O le fata o le lagi" (literally "the star of the sky") – this can be used to refer to something beautiful and rare, like a jewel.
* "O le taʻimua o le moana" (literally "the pearl of the ocean") – this can be used to refer to something valuable and precious, like a jewel.
The best translation would depend on the specific context and the type of jewel being referred to.