Quick definitions from WordNet (gem)
▸ noun: art highly prized for its beauty or perfection
▸ noun: a crystalline rock that can be cut and polished for jewelry ("He had the gem set in a ring for his wife")
▸ noun: a precious or semiprecious stone incorporated into a piece of jewelry
▸ noun: a sweet quick bread baked in a cup-shaped pan
▸ noun: a person who is a brilliant and precious as a piece of jewelry
▸ Also see gem
▸ noun: art highly prized for its beauty or perfection
▸ noun: a crystalline rock that can be cut and polished for jewelry ("He had the gem set in a ring for his wife")
▸ noun: a precious or semiprecious stone incorporated into a piece of jewelry
▸ noun: a sweet quick bread baked in a cup-shaped pan
▸ noun: a person who is a brilliant and precious as a piece of jewelry
▸ Also see gem