What do we make of this listing?

They seem to have the carat listing for the Magic LONG Pendant which is listed as 2.55 carats on the website. The one on this listing should be 2.44 carats.

I know when VCA says that each piece would vary in carat weight, I don't know if the difference would be this much.

I am always scared of ebay whether the listing is accurate or not.
 
It appears that this seller is going way out of their way to convince prospective buyers that the piece is authentic.
The additional carat weight doesn't add up nor does the comment that they have several other pendants....
The listing doesn't inspire my confidence...