Vintage Navajo sterling silver ring It is set with a high grade natural turquoise from the Pilot Mountain mine. It has beautiful rusty chart matrix and nodules of blue turquoise that has areas that has aged to green with exposure to air, skin oils etc. Just gorgeous. 

Simple setting with raindrop row crowns at each end. Hand hammered chank with cold chisel splits. 

Size 6.5. It has a Kachina hallmark inside that I cannot identify.