Antique Marcasite Pendant Necklace With Chain

Antique Marcasite Pendant With Chain                Circa. 1900                 American

Black metal pendant embedded with marcasites.   At center is a mother-of-pearl disc with a cut steel center flower    20 inch black metal chain is a new replacement.   The pendant measures 2 1/2 inches high  x  1 1/2 inches wide     Total weight of the necklace is 25.7 g.      16.5 dwt