Hmmm... I'm not so sure... Pearl looks a bit too white, though it could be the pics. The pearl should have a glossy irridescence to it, and the pearl's setting should be very thin, and low in profile.
As for the finish of the insert... Under direct light, it should appear to be very dark, somewhat glossy black, and in certain lighting conditions where the lighting is not as optimal, it should have almost a matte gray appearance. Hard to explain, so maybe this pic might do a better job of providing an example...
As for the rest of it... The back looks okay, but I have to ask- Are these inserts sold as new, or used? These are either used pieces, taken off and being resold, or they are factory seconds. If you look at the 7:00 marker... It might just be my eyes playing tricks on me, but that marker appears to be thicker than the others...
Any chance that you can get some additional pics?