I just modelled Pendant for fun with Lions Mane around your neck. I hope I didnt missed the point.
Native Formats: F3D (Autodesk Fusion 360, filesize: 84.8 MB)
Exchange Formats: OBJ (OBJ, filesize: 71.6 MB), FBX (Autodesk FBX, filesize: 25.9 MB), STL (Stereolithography, filesize: 76 MB), IGE (IGES, filesize: 23.9 MB)