Check out Marble wall 163 3D model on CGTrader for $19. High-quality mesh by notfun: 100 polys, 100 vertices. Textured, UV Mapped.
STL (Stereolithography, filesize: 2.7 MB), OBJ (OBJ, filesize: 2.45 MB), MAX (Autodesk 3ds Max, filesize: 2.93 MB), FBX (Autodesk FBX, filesize: 2.89 MB)