I am noticing some princess cut diamonds with off ratios. Is a diamond that is 1.10 ratio, a no-no for any
particular reason? I am looking at a 2.25 princess diamond (dimensions, 7.85x7.13x4.87.)
It has a depth of 68.3 % and a table of 65%.
If you want your stone to be a perfect square you should look for ratios in the range of 1.00 to 1.05. Anything over that and it will be more of a rectangle shape. but it wouldn''t affect the diamond''s performance I don''t think. Good luck!
Aside from the shape, ask for some detailed pics and an ASET image so you can get a better idea of how this diamond may look and potentially perform, these are very useful tools when trying to buy a Princess, as cut quality can't be judged by the numbers so much.
For best light performance (at least as graded by AGS) by a Princess cut, the Oscar goes to the Square stones!...the more square the better - within a very few %.
Of course, square doesn't doesn't guarantee you a best performance - you gotta have the right crown and pavilion angles, right # of pavilion chevrons, etc.
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