Gem
WordNet
noun
(1) Art highly prized for its beauty or perfection
(2) A precious or semiprecious stone incorporated into a piece of jewelry
(3) A sweet quick bread baked in a cup-shaped pan
(4) A person who is a brilliant and precious as a piece of jewelry
(5) A crystalline rock that can be cut and polished for jewelry
"He had the gem set in a ring for his wife"
"She had jewels made of all the rarest stones"
WiktionaryText
Etymology
ġimm, from gemma; refashioned in Middle English under the influence of Old French gemme