For your consideration is this interesting hand made, modernistic ring. Abstractly made with a center black stone . The black stone has what looks like mica in the stone. It has been oxidized in areas and the center and edges are raised. It looks like it could actually be Native American Indian but is unmarked so I can't say for sure but this is another indication. It has tested and is guaranteed as sterling silver.
It is a size 10 so could be worn by a man or woman. The face is a nice size measuring 1 inch by 7/8 inches.
It is in great condition other than a very uneven patina (especially the band - I will be glad to polish). I don't know if the line in the back is a sign of resizing or not .