Meaning

noun art highly prized for its beauty or perfection

noun a crystalline rock that can be cut and polished for jewelry

noun a person who is as brilliant and precious as a piece of jewelry

originInherited from Middle English gemme, gimme, yimme, ȝimme, from Old English ġimm, from Proto-West Germanic *gimmu (“gem”) and Old French gemme (“gem”), both from Latin gemma (“a swelling bud; jewel, gem”). Doublet of gemma and Gemma.

Etymology from Wiktionary, CC BY-SA 3.0