This specific 3D model, "Cross pendant 3D print model 6", 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: 1.2 MB), 3DM (Rhinoceros 3D, filesize: 20.7 MB)