Marble wall 135 3D model is available on CGTrader for $19. Original author: notfun. Specs: 100 polys, 100 verts.
STL (Stereolithography, filesize: 932 KB), OBJ (OBJ, filesize: 677 KB), FBX (Autodesk FBX, filesize: 1.1 MB), MAX (Autodesk 3ds Max, filesize: 1.14 MB)