Marble wall 84 3D model is available on CGTrader for $19. Original author: notfun. Specs: 100 polys, 100 verts.
STL (Stereolithography, filesize: 1.22 MB), OBJ (OBJ, filesize: 998 KB), FBX (Autodesk FBX, filesize: 1.42 MB), MAX (Autodesk 3ds Max, filesize: 1.46 MB)