This free "Antique Round and Baguette Diamond Filigree Art Deco Ring 3D print model purchase" 3D asset is currently listed under the authorship of "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
STL (Stereolithography, filesize: 26 MB), JCAD (JewelCAD, filesize: 2.32 MB)