This specific 3D model, "Light Minimalist Diamond Ring Earrings Pendant Set 3D print model 50", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
STL (Stereolithography, filesize: 533 MB), JCAD (JewelCAD, filesize: 1.86 MB)