Synonyms for Jewel (same or very similar meaning)
WordNet sense 1 (a person who is a brilliant and precious as a piece of jewelry):
gemWordNet sense 2 (a precious or semiprecious stone incorporated into a piece of jewelry):
precious stoneWordNet sense 3 (adorn or decorate with precious stones):
bejewelFrom the ODE community, based on WordNetadd/edit