I've never heard of a 3D HDMI cable. Sounds like a marketing term.
You should have an HDMI 1.4 cable. I'd avoid anyone calling it a "3D HDMI cable." Plenty of respectable sources for 1.4 cables, such as Monoprice. You probably have only HDMI 1.3 cables. Yes, there is a difference. Will you visually notice? ........