This specific 3D model, "Light Minimalist Diamond Ring Earrings Pendant Set 3D print model 41", 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: 324 MB), JCAD (JewelCAD, filesize: 687 KB)