Antique Ring with Pearls and Simulated Emerald

Antique bold Silver Ring with Ornate band. 6 pearls form a circle with a green glass simulated emerald in the center. Some of the seed pearls have been replaced and there is a small crack in one of the older ones. These are replaceable. This is an old ring, purchased in England. There are markings on it, which I cannot decipher. Fits size 7 ring finger, but a little snug. Really interesting and beautiful ring.