Rock Render Ball

I'm building up a personal collection of materials based on a mostly uv-less workflow for rapid illustrations and renders. This is a composition of a layered shale-like rock shader using some of my own photos and Allegorithmic's Bitmap2Material app (still learning Substance Designer) which I pulled a pretty decent displacement map from. I'm using 3Dsmax for modeling and Vray 3.0 for materials and rendering.