Congratulations!!! Truly, the diamond is better than most, and she is going to be thrilled! Do come back with pictures for us and good luck with your proposal!!!
I received the ring a couple days ago and think it's beautiful! I appreciate your help and would still love any more input. When I take better pictures with a real camera and better lighting (as compared to these iPhone pictures where the black phone is blocking the light), I'll post them in the Show Me The Bling forum.
Just for reference, the lighting is natural on an overcast day.
Also, below is a link to a video. This was taken indoors with heavy spotlighting from my iPhone flash. Pardon the quality and my heavy breathing. This is probably a decent example of a well-cut diamond looking "dark" under intense light but also sparkling like mad.