Crystal Geometry ring vol2 3D model is available on CGTrader for $16. Original author: izydor-template.
STL (Stereolithography, filesize: 86.9 MB), OBJ (OBJ, filesize: 86.9 MB), FBX (Autodesk FBX, filesize: 69.5 MB), 3DM (Rhinoceros 3D, filesize: 43.4 MB), 3DS (3D Studio, filesize: 86.9 MB), STP (STEP, filesize: 86.9 MB)