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Culet?

Discussion in 'RockyTalky' started by alex, Apr 4, 2001.

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  1. alex
    Rough_Rock

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    Feb 24, 2001
    by alex » Apr 4, 2001
    Leonid,
    Looking at a diamond that has ideal cut, 1.2 on HCA, with a 0.9% culet. Is the culet too large? At what percentage does the culet play a factor in the brilliance of a diamond?
    Thanks, Alex
     
    


    


  2. Garry H (Cut Nut)
    Super_Ideal_Rock
    Trade

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    by Garry H (Cut Nut) » Apr 4, 2001
    Hi Alex,
    I am the HCA 'H'
    The culet can go to 10% before any radical effects are detected by the GIA's virtual computer modeling research.
    However this would look like a I3 inclusion and [​IMG]
    Treat the culet like an inclusion, and at that % the size of the diamond would need to be 20ct before I would be concerned.
    Dave Atlas likes a very small to small culet because it minimises risk of chipping during handling and setting.
    Garry Holloway
     
  3. pyramid
    Ideal_Rock

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    by pyramid » May 4, 2003
    Why would it look like an inclusion. I thought a large culet would just look like a window like you see in the old european cut diamonds?
     
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