old silver and turquoise mens ring

I don't know much at all about this chunky mens ring, beyond the obvious that it has been cut. Weighing almost 16g, it has 9 rectangular stones set in a 'windowpane' pattern on its face, with round accents before a simple (worn?) pattern down the band on each side.

There are no markings on it anywhere that I can find, but to me it still somehow has the look/feel of being real silver and turquoise chunks, and it really does appear to have both been very well made by a talented craftsman when it was new, and to have otherwise managed to live a very long life since whenever that was.

If anybody can recognize anything about it that could shed a clue to its age or origin, *please speak up and leave a comment*!! Meanwhiles I think I probably will take it to a reputable jeweler sometime in the near future to get a professional opinion anyway, if not get it repaired and sized so *I* could wear it...I *do* kinda like it...?? :-) :-) :-)