This specific 3D model, "Light Gold 18K Cross Pendant 1CP025 3D print model purchase", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
STL (Stereolithography, filesize: 2.32 MB), OBJ (OBJ, filesize: 2.02 MB), FBX (Autodesk FBX, filesize: 306 KB), 3DM (Rhinoceros 3D, filesize: 7.9 MB)