True Vtg. Marcasite and pink topaz ring

Oh my this is a gorgeous ring! It's set in solid sterling silver and is a size 8.5. It has mostly prong set marcasite and approx 2ct of pink topaz. Since this is a vtg. piece I am including extra marcasite with the ring. I haven't cleaned with anything other than polishing cloth as to preserve. It is in incredible condition as evidenced by photos. Thanks so much for looking!