I looked at the dark brown beads in the center again and they do appear to be some type of seed although I don't know what kind. It looks almost like it was carved out of wood.
The small black, white and blue beads are glass and I believe the large blue one in the center is also glass. The two large black ones in the center almost look like some type of seed, but I'm really not sure what it is. I will look at it again more closely and see if I can figure it out. The silver toned ones that look a bit like springs are some type of metal but not silver.