silver , gold , copper , iron , black lead (plumbago), zinc (Kharsind), and tin . Thirteen STONES : ( AL-AHJAR) Pyrites marcasite ( marqash*ta ), magnesia , malachite , tutty Zinc oxide (tutiya) , talcum , lapis lazuli , gypsum , azurite, magnesia , haematite (iron oxide), arsenic oxide, mica and