crown jewel

English Thesaurus

1. a precious stone that is a valuable part of a sovereign's regalia (noun.artifact)

hypernym	:	gem, jewel, precious stone,
definition	:	a precious or semiprecious stone incorporated into a piece of jewelry (noun.artifact)

2. the most desirable assets of a corporation (noun.possession)

hypernym	:	assets,
definition	:	anything of material value or usefulness that is owned by a person or company (noun.possession)