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"
enthusiastic approval; "the book met with modest acclaim"; "he acknowledged the plaudits of the crowd"; "they gave him more eclat than he really deserved"
praise vociferously; "The critics hailed the young pianist as a new Rubinstein"