Marble wall 231 3D model is available on CGTrader for $19. Original author: notfun. Specs: 100 polys, 100 verts.
STL (Stereolithography, filesize: 652 KB), OBJ (OBJ, filesize: 397 KB), MAX (Autodesk 3ds Max, filesize: 891 KB), FBX (Autodesk FBX, filesize: 850 KB)