Cutting I'm getting good at, I just can't grind for to long, it gives me headaches if I do. I was just curious about using a tumbler, I find pieces with fire close to the surface so I was thinking about tumbling them but I dont want to shape the stone, I want to keep it botryoidal ya know. Anyway I'm sure there is videos on how to polish fire agates specifically, most of those are just specimens, though that first one you could reveal fire around the edges of that rootbeer colored layer and still keep that cool quartz crystal cap on top, that would be a cool specimen, that second one I'm iffy on what to do, I love it as a specimen but you can see that layer from the side with that pink schiller.