So the other stone arrived, and my jeweler sent me a video of them side by side. The 1.71 is on top:
https://giphy.com/gifs/NSsLy90iLYXw4/html5
His comments were that the 1.71 is definitely whiter, and noticeably bigger. He said if cut of the H&A stone was a 100%, the 1.71 was a 97% and for that small difference he would probably choose the bigger stone if it was him buying for his wife. He also said the crystals on the 1.71 were white, which is very rare and a better type of inclusion than black ones. He even thinks the 1.71 may be "more crisp."
So with all that said, I think I'll just go with the 1.71. It's bigger, whiter and the brilliance difference is apparently negligible or favors the 1.71. Seems like the only thing I'd be giving up is the H&A designation. Hopefully I am choosing the right one!
https://giphy.com/gifs/NSsLy90iLYXw4/html5
His comments were that the 1.71 is definitely whiter, and noticeably bigger. He said if cut of the H&A stone was a 100%, the 1.71 was a 97% and for that small difference he would probably choose the bigger stone if it was him buying for his wife. He also said the crystals on the 1.71 were white, which is very rare and a better type of inclusion than black ones. He even thinks the 1.71 may be "more crisp."
So with all that said, I think I'll just go with the 1.71. It's bigger, whiter and the brilliance difference is apparently negligible or favors the 1.71. Seems like the only thing I'd be giving up is the H&A designation. Hopefully I am choosing the right one!