This free "Light Weight Diamond Ring 3d Model and Render 3D print model get" 3D asset is currently listed under the authorship of "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
STL (Stereolithography, filesize: 5.44 MB), 3DM (Rhinoceros 3D, filesize: 4.7 MB)