Check out Marble wall 289 3D model on CGTrader for $19. High-quality mesh by notfun: 100 polys, 100 vertices. Textured, UV Mapped.
STL (Stereolithography, filesize: 1.06 MB), OBJ (OBJ, filesize: 828 KB), FBX (Autodesk FBX, filesize: 1.25 MB), MAX (Autodesk 3ds Max, filesize: 1.29 MB)