This specific 3D model, "Light wt Ring Earrings Pendant set 3dm stl 1-render details 3D print model 40", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
The licensing terms for this digital asset are governed by "Unknown license".
STL (Stereolithography, filesize: 65.9 MB), JCAD (JewelCAD, filesize: 408 KB)