Check out Light Gold Diamond Men Ring 2MR087 3D model on CGTrader for $20. High-quality mesh by Bulgeri.
STL (Stereolithography, filesize: 1.46 MB), OBJ (OBJ, filesize: 1.56 MB), FBX (Autodesk FBX, filesize: 205 KB), 3DM (Rhinoceros 3D, filesize: 2.44 MB)