Your ring and hand pictures are gorgeous!!! Lucky you that you have found your ideal rock. Thanks for sharing the pictures and your experience with me!
Yes you can. A lady from this forum taught me about HCA point system and I did plug in the #s of my Tiffany diamond ring and luckily my diamond is 1.9 without specifically looking for it. We picked out my diamond without knowing the 3cs (we asked for 1 carat or a little more) and with a budget. This lady on purse forum told me through pm that she looked about more than 10 diamonds with certificates so she can make sure her Tiffany diamond is HCA 2 points or under. She bought a two carat Tiffany so I think it's harder when you go up the carat size to find the ideal one.
If you really care about it, make sure you get it the exact way you want it. I am sure your SA will try everything to make a sale and make you happy.
This is my 1.07 carat Tiffany with the specs close to what you are looking for...under different lightings. My ring size is 6 for now...gotta resize it down.