Real rock scanned (rock044). The model is derived from a natural rock so its shape will have a natural look when scaled to any size. The model is textured with a photo of a piece of Hawkesbury sandstone in Sydney. To find other models with sandstone texture search for "SstTex" or to find models with the same texture search for "SydSst10". We are using these models to test our Rocksolver software which solves the jigsaw puzzle of building with irregular-shaped blocks of unprocessed rock. See website link below (or visit my blog: malbertsinvention.wordpress.com) for more information about Rocksolver. Mesh reduced to 252 vertices (500 triangular faces) using MeshLab. Model produced by Malcolm Lambert at Intresto.