Check out Light Gold Diamond Men Ring 2MR029 3D model on CGTrader for $20. High-quality mesh by Bulgeri.
STL (Stereolithography, filesize: 8.5 MB), OBJ (OBJ, filesize: 18.5 MB), FBX (Autodesk FBX, filesize: 2.31 MB), 3DM (Rhinoceros 3D, filesize: 6.9 MB)