Wow, a minerolgy expert in our midst! What a cool resource! Thanks Triarius. Next time i do some rocks, i'm going to post samples here, lol. I'd suggest: Yes, more polys for more detail and the ability to smooth (if you want to do smoother sandstone) and to have more variety in the edges. A bumb map cannot do edges, it's only an illusion that works "head on". You would need a normal or displacement map (which tells the display card how to fake more vertices). Don't think Vue supports those yet. Can you combine more than one texture? That could make them look more stratified.