Check out Light Gold Diamond Men Ring 2MR045 3D model on CGTrader for $20. High-quality mesh by Bulgeri.
STL (Stereolithography, filesize: 13.5 MB), OBJ (OBJ, filesize: 43.5 MB), FBX (Autodesk FBX, filesize: 5.42 MB), 3DM (Rhinoceros 3D, filesize: 12 MB)