Autodesk offers professional certifications in Maya and 3D Studio Max, if by "graphics development" you mean 3D modeling and not graphics programming. But this says little about artistic skill.
Programming certificates are a joke, inside or outside game development.
Stuff like CCNA is useful if you're a large company with a giant Cisco network and need to hire five mediocre guys to keep it working but don't really want to expend a lot of resources hiring. It works because an expert at replugging cables doesn't really give you much benefit over a novice at replugging cables.
There is no equivalent scenario for game development, nor for programming. Good programmers are dozens of times more valuable than mediocre programmers. Good designers are infinitely more valuable than mediocre ones.