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Ideal Measurements for a Princess Cut

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Pig In Zen

Rough_Rock
Joined
Jun 5, 2006
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Can someone post the aboslute ideal specs for a princess cut?

Ignoring colour, carat and clarity, I''m wondering about cut. Specifically:

Table %
Depth %
Cutlet
Girdle

Thanks in advance!

PIG
 
there are no absolute ideal specs for a princess.
ags lab starting giving princess cuts ''ideal'' grades last year, but there are no published standards on what makes ideal since different looks can all do well. if you want a princess that is sure to perform, get a princess with an ags grading report that has an ''0'' in light performance.
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Thanks Belle
 
Try this link for a good starting off point
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Thanks for your input. That''s a very useful chart.

Should I be concerned if a GIA (or other similar certificate) is a few years old (e.g. 2004)?

Thanks in advance,
PIG
 
No. In fact, AGS did not grade princess cuts until late 2005, so you may find a true gem in a GIA graded stone with a cetificate before then!
 
Date: 6/5/2006 6:18:13 PM
Author: researcher
No. In fact, AGS did not grade princess cuts until late 2005, so you may find a true gem in a GIA graded stone with a cetificate before then!
Click to expand...
Actually, before AGS launched the grading-system, the fact that there were no standards just led to an over-supply of low-performing princesses.

Talking to the scientists at AGS this week, I learned that they estimate that non AGS-graded princesses at the best would get an AGS-2. The average is probably somewhere around AGS-5.

AGS really put us on another planet with their research and cutting guidelines. As a result, one can say that it it extremely unlikely to cut an AGS-0 bij accident.

Live long,
 
Thanks for everybody''s help to this point. It''s much appreciated.

I''m hoping to get your collective input for a ring with the following specs:

Princess cut
Measurements: 5.85 x 5.62 x 3.72mm
Carat weight: 1.03
Polish: very good
Symmetry: very good
Color: G
Flourescence: none
Clarity: VS1
Table: 70.2%
Crown height: 9.6%
Girdle: medium (1.9%)
Total depth: 66.2%
Cutlet: none

I''m not looking for the steal of the century but I''m trying to figure out:

a) Is this a good stone
b) What''s a fair price

Thanks in advance!

PIG
 
a) shallow (double check your depth and table?)
b) "Pricescope your diamond" tool at the top of the page
 
Thanks Julie.

I''ve double-checked the table and depth and they are 70.2% and 66.2%.

I''m assuming that by shallow you mean the depth is low? Can you recommend a more ideal %?

Thanks,
PIG
 
Oh, somewhere between 70-76%
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I''m a little confused. I''ve looked at this link: http://www.gemappraisers.com/oldcutgraderules.asp but through other research, I''ve heard that the table should be at least 5% higher than the depth. Doesn''t this 5% rule and the table conflict? An ideal table (62-68%) would require a depth of 57-63%.

Is this 5% differential a falsehood?

Thanks
 
Approaching my ...8th consecutive hour on PS... (yes, I have serious problems.)


Date: 6/6/2006 8:28:37 AM
Author: Pig In Zen
I''m a little confused. I''ve looked at this link: http://www.gemappraisers.com/oldcutgraderules.asp but through other research, I''ve heard that the table should be at least 5% higher than the depth. Doesn''t this 5% rule and the table conflict? An ideal table (62-68%) would require a depth of 57-63%.

Is this 5% differential a falsehood?

Thanks
Click to expand...
Yes, that''s a falsehood. If you gave me something that sounded like a myth rooted in some truth, it would be the table should be at least 5% LESS than the depth. Which isn''t too bad of a rule to go by, except that the 5% is completely arbitrary.
 
Thanks Julie. Perhaps I''ve mixed up the table and the depth.

PIG
 
How about this instead:

Princess cut
Measurements: 5.82 x 5.58 x 3.88mm
Carat weight: 1.06
Polish: excellent
Symmetry: very good
Color: G
Flourescence: none
Clarity: VS1
Table: 69.8%
Crown height: 9.0%
Girdle: thin to medium (2.2%)
Total depth: 69.5%
Cutlet: none

Thanks!


PIG


 
Has potential. Get an Ideal Scope image.
 
I apologize for the constant questions - what can I say, I''m nervous!

Are these readily available from online vendors (Dirt Cheap, Monderra, Blue Nile, Whiteflash) or is this something I can only get from visiting a dealer?

What should I be looking for in this report?

Thanks,
PIG
 
You should look for a lot of red, a sprinkling of black, and minimal white.
https://www.pricescope.com/idealscope_indx.asp

Yes, JA/DCD, WF, GOG will provide Ideal Scope images. Blue Nile can't. No idea about Mondera (guessing no?)
 
Thanks Julie - those look good and are definitely beating the prices I''ve been able to get.

Is "pointed" and "none" one-in-the-same with respect to cutlet?

Thanks
PIG
 
Date: 6/6/2006 10:00:15 AM
Author: Pig In Zen
Is ''pointed'' and ''none'' one-in-the-same with respect to cutlet?

Thanks
PIG
Click to expand...
Yes. Or close. Either is fine.
 
The second Whiteflash stone and the third one are the best of the four listed.


Rockdoc
 
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