Maximum length/width ratio for princess to look square?

[eks6426]

What is the maximum length/width ratio for a princess cut diamond to still look square? At what point does it become noticable? 1.05, 1.06 or does it need to be 1.1 or higher?

 

[reena]

i think people generally say that anything over a 1:1.05 ratio will start to look off-square. my stone is a 1:1.1 and you can definitely tell that it's not a perfect square. (it's a cushion not a princess)

check out the fancy shape selector at www.gemappraisers.com to get a better idea . . .