Check out Marble wall 226 3D model on CGTrader for $19. High-quality mesh by notfun: 100 polys, 100 vertices. Textured, UV Mapped.
STL (Stereolithography, filesize: 938 KB), OBJ (OBJ, filesize: 683 KB), MAX (Autodesk 3ds Max, filesize: 1.15 MB), FBX (Autodesk FBX, filesize: 1.11 MB)