Got this as a travel band.  It looks like a CZ, and do not wear it next to a real diamond or the rock will look like plastic.  The small size (~1ct) helps off set the fakeness, and it ends up being a cute ring with a delicate setting.  The sizing was accurate (I got a 5), and the ring is very lightweight and unobtrusive.

You will not be able to trick your girlfriend into thinking you paid a lot for this ring, but it's a nice item for $10.