If GIA-personnel could assign a grade so quickly, I truly wonder why they currently are struggling with months' of turnaround-time? Or is it that VG in symmetry is so wide that one can easily call it without the risk of being wrong?
The culet and table are centered, the stone outline is at least VG, the mains match up with the bezels, each bezel and each pavilion main have the same shape. The table is a very well formed octagon. We were judging symmetry not the cut.
As a learning lesson for round stones graders were taught to close the diaphragm on the microscope and place the diamond in the open hole, then they would look at it in several different positions as they learned to lift, push and rotate the stone. In this process there are no tweezers getting in the way of outline viewing as well as mains to bezel alignment. Before machines were used this is the way it was done in the lab.
Are you asking about lab-graded 2D symmetry, or 3D optical cutting precision? Both of those can be important to the appearance of the diamond, but only if coordinated with the proper angles and proportions.
We have a strong culture here of seeking to know all before making a decision and the answer to your question seems like merely the start of the quest (?). Seeing it apparently be the end of your quest is surprising to me unless I am missing a large part of your journey for a great diamond.
All of here like a good story, won't you tell us more about yours?
Wink
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