Ancient Roman Woman's Ring

This is an ancient Roman ring from the year 313, which would put it at being 1700 years old. It was found in the Holy Land region, with ancient Roman coins and artifacts. It has an extremely dark, almost black patina with some light  brown incrustations. It looks like it might either have had a stone pried off the front of it, or perhaps there is the image of a face on it.The inner band is heavily incrusted, as seen in the second picture. That incrustation is brown as well; not sure what the mineral incrustations are, other than being a lighter shade of brown than the rest of the ring.  While it is probably not possible to determine who wore this little ring, I would love to have whatever history might be available about it and possibly a rough idea of what it might be worth. I am not going to sell it at all, but the more information that can be found about it, the better.

Fair