I was at South Coast Plaza, that incredible Mecca of a mall in LA, for the first time a couple days ago. Of course that place has so many super high end big names like Cartier, Tiffany, etc. as well as jewelers I'd never heard of, like Nathan Alan. Naturally, all these places had their biggest and most spectacular diamonds in the display windows... some so huge and gorgeous I could barely breathe, for real! Anyway, many of the really huge diamonds had a notable gray tinge to them, but they were incredible, stunning! Admittedly, I've never seen diamonds that big IRL before. Is that gray tinge something that comes with size, or is it lighting? The smaller diamonds (you know, only 2 carats... ) were bright white and colorless. I found the gray ones just spectacular! Can anyone shed any light on this, pun intended?