No way to know from those photos. Can't get a read on the quality of the make or of the stones.
Any hallmarks on the metal or chain findings to help us? Can you provide any sense of scale -- like a ruler or penny in the photo? Any context -- like "found it at the playground" or bought it on eBay?
It is an odd assortment for fakes -- in the combination of cuts and color -- so they could be "genuine," but genuine what I don't know. Even if they were real, not sure it makes a lot of difference, value-wise.
Sorry to say but that's a pretty lazy post -- not sure why I'm answering.