Good to hear you are delighted with Mr Dovesgate's pick!
May I suggest that, if you are going to proceed and design a mounting for the lovely Ms. N, you might think about your diamond as "warm" or "ivory" or, even, "ecru" in color. To me, by the color grade and from the photos, your diamond shows a lovely, delicate, very ethereal feminine tint... it almost appears more brownish than yellowish, but it is hard to tell from the photos (and, as you indicate, it may be hard to tell IRL). In other words, I am not sure that "N" will read "yellow" enough for you to be happy if you are thinking about trying to coax a traditional, easy to discern yellow hue from this diamond. And, by the same token, I am not sure there is enough color to worry about "hiding" it either. Make sense?
You'll just have to come back for another, YELLOW diamond, down the road...
Regardless, now that you have your diamond in hand, deciding what to do next is the REALLY FUN part of the process!