I almost certain it's chert ands it's really smooth. However, im in no way an expert. I just love the outdoors, and this is a hobby that I picked up as a small child from countless hours in the outdoors with my father who passed away about a year ago. Every time I'm outdoors it's like being with my Dad again. He proved to me at an early age that it's not about what you catch, kill, or find. It's about the history of the place and it's about being close to God and enjoying his creation. I remember him saying things like, "see the tree, you and I are probably the only person that has ever seen that tree.