Marble wall 187 3D model is available on CGTrader for $19. Original author: notfun. Specs: 100 polys, 100 verts.
STL (Stereolithography, filesize: 1.04 MB), OBJ (OBJ, filesize: 811 KB), MAX (Autodesk 3ds Max, filesize: 1.27 MB), FBX (Autodesk FBX, filesize: 1.24 MB)