What is a thing made of, or resembling, marble, as a work of art, or record, in marble; or, in the plural, a collection of such works; as, the Arundel or Arundelian marbles; the Elgin marbles called?

marble — A thing made of, or resembling, marble, as a work of art, or record, in marble; or, in the plural, a collection of such works; as, the Arundel or Arundelian marbles; the Elgin marbles. (Webster's 1913.)