May I ask probably a ridiculous and naive question? Has anyone turned pens from stone? Perhaps this has been addressed before and I just couldn't find the topic. If so, I apologize. In brief, I have a box of petrified bones that I found as a youngster prowling the badlands of Eastern Montana (dinosaurs just laying around on the ground in some places!). I have no idea what species these bones come from or how old they are. They may be bears or mammoths or dinosaurs. Regardless, They are not attractive for display and have been living in a box in my garage for years. And it occurred to me that maybe turning them into pens would give them some further intrinsic interest. I can't even imagine the machinery or tooling that would be required to fashion stone. Not to mention the expense of obtaining such gear. And, frankly, I don't know if the petrifaction has removed all brittleness or if the project would just shatter. Has anyone attempted stone? Am I out of my mind to consider such a thing? Joe