Vintage Native American sterling brooch

This beauty is a vintage sterling silver Native American brooch. It has the desirable thunderbird motif and is stamped Sterling on the back of the brooch. I am uncertain of the exact name of the gemstone in the center. I have it pinned on a strand of square and round green turquoise from Jay King. Marked DTR. These pieces did not originally come together. This is just how I enjoyed wearing them and I will send them together.