This specific 3D model, "Women Ring Fancy Ring Plain light weight STL 3DM Printable 3D print model 10", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
The license for this digital asset is "Unknown license".
STL (Stereolithography, filesize: 2.17 MB), 3DM (Rhinoceros 3D, filesize: 4.27 MB)