Englishgem
noun
1 diamonds, rubies, and other gems:
jewel, precious stone, semiprecious stone, stone, solitaire, brilliant, baguette, cabochon;
archaic bijou.
2 the gem of the collection is the tyrannosaurus skeleton:
best, finest, pride, prize, treasure, glory, wonder, flower, pearl, jewel, the jewel in the crown, masterpiece, chef-d'œuvre, leading light, pick, choice, paragon, prime, cream, the crème de la crème, elite, elect;
outstanding example, shining example, perfect example of its kind, model, epitome, archetype, ideal, exemplar, nonpareil, paradigm, embodiment, personification, quintessence, standard, prototype, apotheosis, acme;
informal one in a million, the bee's knees, something else, the tops.
▷antonyms dregs.