These high-res photorealistic models have very smooth edges and are perfect for close-ups.
Modeled in Cinema4D, the .c4d file contains the complete 'HyperNurbs' model for easy customization or resolution change and comes with the complete material and light setup i used for the first rendering above (only HDR-Image has been removed).
the .3ds and .obj files contains untextured high-resolution meshes so that the included bump texture only needs to be applied to a gold material.

so, get rich;)