Check out Light Gold Diamond Men Ring 2MR003 3D model on CGTrader for $20. High-quality mesh by Bulgeri.
STL (Stereolithography, filesize: 907 KB), OBJ (OBJ, filesize: 2.1 MB), FBX (Autodesk FBX, filesize: 289 KB), 3DM (Rhinoceros 3D, filesize: 8.67 MB)