This specific 3D model, "Women Ring Render 3dm STL OBJ FBX MTLDetails 3D print model 4", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
STL (Stereolithography, filesize: 612 KB), OBJ (OBJ, filesize: 1.35 MB), FBX (Autodesk FBX, filesize: 346 KB), 3DM (Rhinoceros 3D, filesize: 5 MB)