Vintage 925 sterling silver delicate dainty ring w marcasite stones

Vintage dainty sterling silver ring with natural marcasite stones. Wavy style, from the 90th. Stamped 925. Size 6.75. Three stones are missing - one in the center and two on the edges on each side. Those spots were filled with silver, and because of that the ring looks nice and symmetrical, as shown in pictures.