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How is cut grading done on Princess cuts?


The American Gem Society Laboratories is the only major  lab performing overall cut grading on Princess cuts.  A true Ideal cut princess is one that has been certified as an AGS0.  All  A CUT ABOVE® Princess diamonds have AGS0 Platinum certificates.


Read about light performance grading of princess cuts in this summary article on Cut Grading of Princess.  The article contains a link to the full article for those looking for more technical details.



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