This specific 3D model, "Women Ring Render 3dm STL OBJ FBX Details 3D print model 345", 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: 2.22 MB), OBJ (OBJ, filesize: 3.81 MB), FBX (Autodesk FBX, filesize: 605 KB), 3DM (Rhinoceros 3D, filesize: 3.38 MB)