3d-max or auto cad for CAD/CAM

Hi,my name is Milos.I have two question.What program is better
3d-max or AutoCad for cad/cam production? And in your opinion which
of those two is better for jewlery design?

Thank you!

Milos, Try Rhinocerous http://www.rhino3d you can download a
demo. GIA teaches the Matrix overlay for Rhinocerous.