Source : Webster's Revised Unabridged Dictionary (1913)

Verd antique \Verd` an*tique"\ [F. vert antique a kind of
   marble; verd, vert, green + antique ancient: cf. It. verde
   antico.] (Min.)
      (a) A mottled-green serpentine marble.
      (b) A green porphyry called {oriental verd antique}.

Source : WordNet®

verd antique
     n : a dark green impure marble [syn: {verde antique}]