Check out Marble wall 230 3D model on CGTrader for $19. High-quality mesh by notfun: 100 polys, 100 vertices. Textured, UV Mapped.
STL (Stereolithography, filesize: 1.01 MB), OBJ (OBJ, filesize: 777 KB), MAX (Autodesk 3ds Max, filesize: 1.24 MB), FBX (Autodesk FBX, filesize: 1.2 MB)