Check out High Precision Moss Covered Rock 3D AssetKit PBR Low-poly 3D model on CGTrader for $2.99. High-quality mesh by zychrist77: 16500 polys, 8300 vertices. Textured, UV Mapped.
STL (Stereolithography, filesize: 613 KB), OBJ (OBJ, filesize: 2.15 MB), FBX (Autodesk FBX, filesize: 3.2 MB), USD (USD, filesize: 2.19 MB), PNG (PNG, filesize: 4.33 MB), SKP (Sketchup, filesize: 85.3 MB)