In our efforts to ensure
is being cut to the best diamond standards possible, we
recently submitted a 1ct. Asha®
sample to the inventor of the AGA-CERT cut classes, David
Unlike the Hearts and
Arrows standards, there are various grades of Princess cuts,
but not an "ideal" specification. The highest class
currently is Class 2A Princess cut, which the Asha®
cut is in.
You can visit the AGA
website to learn more at
I have completed the exam of the Asha®
is pretty much indistinguishable from the princess cut
diamonds that were compared with it. These were all AGA Cut
Class 2 princess cut diamonds, so I think it was a fair
was a tad
under 6mm square with a weight of 2.238 ct. It is the one
you supply as a 1 carat size stone and I figure it would be
more like a 1.25 ct size in a diamond based on measurements
and the standard formula. This Asha®
was a D/E
color and flawless or virtually so. I could find nothing
internally or externally to call an inclusion or a blemish.
No doubt, this degree of polish and care with symmetry
combined with specific cutting parameters similar to a well
cut princess cut diamond contributes to the brilliancy and
sparkle we observed.
71.7% depth, 60% table,
15.3% crown height were the numbers on this sample stone. It
had a slightly thick polished girdle and a closed (pointed)
I don't think anyone could do a better job on a princess
cut and I have no cutting suggestions. It looks better than
most princess cut diamonds as it is.
The three diamonds it was compared to
total $15,518 at wholesale cost. I doubt anyone can tell
which is which unless they are paying for one of the four.
David S. Atlas
Senior Member, NAJA
Graduate Gemologist, GIA.
Creator of the AGA Cut Class system