Milky Aquamarine and Marcasite Sterling Silver Brooch

Brooch measures 2” x 3/4” I got this over ten years ago from gems tv. Silver has darkened from age. The pendant broke from the brooch and I just attached it to the back of the brooch. Maybe you can fix it or repurpose the brooch and pendant. Comes from a smoke free home I ship in one business day from ND