This specific 3D model, "Small fancy mans ring 3D print model 17", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
STL (Stereolithography, filesize: 10.5 MB), 3DM (Rhinoceros 3D, filesize: 10.5 MB)