Unknown Gemstone Cuff Bracelet Sterling Marked Native American?

I have this sterling cuff bracelet and I need help identifying the stone. It doesn't look like tigers eye but I am not sure what it is. Also, I think it is southwest native american design but I am not sure about that either. There are no makers marks on the piece and if anyone could please help me out with any information that they might know about the piece. Age, Maker, Origin, Value, History, Style, etc.