The following 3D model is known as "Solitaire Engagement Ring 3D print model 69" and is associated with author "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
STL (Stereolithography, filesize: 2.23 MB), 3DM (Rhinoceros 3D, filesize: 1.53 MB)