When I firat saw this thread I thought that the first two images were photos you were showing as a reference for a TG2 work to come. Good job.
They would definitely pass the quick look test. But after I realized that they were renders I went back a looked and saw a tell tail sign of cg. The sharp edges of the caustics. But I still had to look for a min to pinpoint it.
So like I said, good job. Like the compositions too.