Vintage Sterling Silver Southwestern Turquoise Ring

Item is in good used vintage condition Light to medium wear and scratches See pictures for measurements and size Marked sterling on the inside Note: the blue stone has 2 small cracks.. one you can see and the other one I had to use the loop to see.. still a beautiful ring May need a cleaning and a polish if desired Unsure what the blue stone is?? Could be turquoise but I’m not sure...