Well, it has good numbers. None of the videos are really good enough to look at the stone and tell anything. Mostly we need to see it face
up (head-on), up-close. The idealscope looks ok but not sure if you've got it straight on or not. (I know how difficult it is to try to get a pic
of it while holding an idealscope.)
It would help if you posted the GIA report so we could see if there were anything that stands out. Otherwise, does it have a good return policy?