This specific 3D model, "Light wt Ring Earrings Pendant set stl jcd 1-render details 3D print model 51", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
STL (Stereolithography, filesize: 51.3 MB), JCAD (JewelCAD, filesize: 415 KB)