ideal cut???

[patil22]

What is the best way to find out if a diamond is actually what is known as ideal cut. I heard it cannot be true ideal unless it is AGS certified. But as far as a GIA cert, what should I look for besides the jeweler saying it is within ideal range?????

 

[belle]

get the crown/pavilion angles.

 

[WinkHPD]

Date: 11/3/2005 5:39:32 PM
Author:patil22
What is the best way to find out if a diamond is actually what is known as ideal cut. I heard it cannot be true ideal unless it is AGS certified. But as far as a GIA cert, what should I look for besides the jeweler saying it is within ideal range?????

Hmmm, it is amazing the things one hears. It is not a true thing you heard. GIA does not currently put all of the information that you want on a cert to be sure that the diamond is within all the parameters of the ideal cut, but if you get the Sarin data this can easily be confirmed.

AGS does indeed grade ideal and excellent cut, but one of the things often not understood by the public is that many stones graded excellent (AGS1) or even AGS2 may fall within the parameters of the ideal cut such as created by Tolkowski and later adapted with some adjustments by the trade. An AGS0 cut grade (ideal) has all of the parameters plus ideal polish and symmetry to get the AGS ideal grade, so it might be considered an ideal on steroids as ideal polish and symmetry are NOT required for a stone to be considered an ideal cut.

This of course does not even begin to touch on the concept of Hearts and Arrows cuts or EightStars, both of which are referred to as Super Ideal cuts by many, both in and out of the trade. (Yes, this is truly an oxymoron as ideal is supposed to be the pinnacle, but the diamond trade used that terminology about 50 years or so before it found out how to return even more light to the eye so it needed a new and "better" term.)

There are many threads here that will give you all of the parameters that you need to consider a stone to be ideal cut or not, and some that will give you more information than the normal electrical engineer is expected to learn in his first semester of school.

Wink