1) Add jewels to 2) Adorn with jewels 3) Adorn with precious stones 4) Adorn with stones 5) Deck out with jewels 6) Decorate richly 7) Enjewel 8) To cover with gems Found on https://www.crosswordclues.com/clue/begem
Be·gem' transitive verb [ imperfect & past participle Begemmed ; present participle & verbal noun Begemming .] To adorn with gems, or as with gems. « Begemmed with dewdrops. Sir W. Scott. » « Those lone... Found on http://www.encyclo.co.uk/webster/B/31