Yes I am a knapper and made the points. I wish I knew what the chocolate stuff is for sure. It looks kind of like rainy buttes but I think it is not dense enough to be that. It could possibly be an odd color of novaculite. I am going to show it to some of my knapping buddies and see if any of them gave it to me and/or know what it is for sure. I like it and want more if I can find it.