This specific 3D model, "Dainty Infinity Diamond band 2mm Size6 3D print model purchase", 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.
3DM (Rhinoceros 3D, filesize: 56.9 MB), OBJ (OBJ, filesize: 50.8 MB), STL (Stereolithography, filesize: 34.4 MB)