Check out Underwater dungeon sword Low-poly 3D model on CGTrader for $8. High-quality mesh by JankicDesign: 3898 polys, 2008 vertices. PBR, Textured, UV Mapped.
STL (Stereolithography, filesize: 190 KB), OBJ (OBJ, filesize: 288 KB), 3DS (3D Studio, filesize: 88.3 KB), DAE (Collada, filesize: 932 KB), FBX (Autodesk FBX, filesize: 147 KB)