Mike, after looking at the rings on that one, I'm not sure thats not a piece of mulberry that got mixed in. I don't remember cutting too much small diameter osage with rings that thick. I may need to send you another piece that I know is osage. Mulberry makes a good bow, don't get me wrong, buts its not osage orange. I think they are cousins or something of the sort. Is it a pale yellow or a darker yellow?