what should i look for when trying to select the perfect cushion cut diamond? should i concentrate more on finding a square cushion as opposed to a rectangular cushion?
if the dimentions of the diamond are not as close to a perfect square, will the cushion diamond loose some of its sparkle?

I prefer as much as a perfect square as possible but you also need to ask about the 4 C’s and ask your sales person and they will show the best of the best