Hi folks, I turned up a real eye catcher of an old Navajo ring with an old-timey, handcut turquoise. Bad cloudy day for pics. But the matrix is dark brown and toward rust in color. It is moderately domed (clearly hand done). I do have a strong hunch of what the stone is but welcome your thoughts. Hopefully @Jason can also take a peek. Thanks.
. But as always, who knows! 
I hadn’t considered Persian. If the stone ever comes out of its setting you will know. No backing and it will have that cut many times where the bottom is smaller than top.
Thanks for that interesting tip, Jason. Modern Persian cabs with high polish are so different from the softer look of the old material. But again I’m not betting on Persian being right, just possible I think.
It’s beautiful, makes my heart pitter patter 
It does have a bit of a high dome (not sure if that was as much of a thing for older Persian cut turquoise as it is now but I think so?)
Yes, you can often see early Persian stones in bracelets and rings that are domed/boulder. The other stone I showed above with the real boulder profile is stated to be 1920s.
https://www.turkey-mountain.com/galleries/p/rings-template-bhp6l-pp48n-kat3b-dr3yz-p6tlw-brbfh-wjeen
Or in this bracelet
https://www.ebay.com/itm/184329946857
Not that I’m dying on this hill, just speculating. 
