You can create 3D models with Python Script. Python can be used all over Rhino3D in many different ways. Oval cabochon rings can be created programmatically much faster than you could do it manually.

- Just set the ring parameters in the ellipse_cab_params.json file. - Run the ellipse_cab_ring_builder.py file with the Rhinoceros 3D Software.

Rhino uses Python version 2.7. No need to download and install any python interpreter on your computer.