Native American Necklace

This is an authentic Native American necklace. It was made by a Sioux Indian here in South Dakota. It is at least 30 years old. My dad bought it for me from the native that made it shortly after I was married and I have been married 36 years. It has a small area that is coming loose but years ago I glued it down so it shouldn’t cause any issues. As you can see when you wear it you won’t even see the area that is glued.
It is 18” long with the pendant is 4”