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(by the way it is an ags 000 cert, which I thought
was odd with the crown angle being smaller than most
ideals)
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The parameters for crown angle on a "0" stone extend from 33.7 to 35.8 degrees.
Actually, that 33.7 degree crown angle works pretty well in combination with a 40.9 degree pavilion angle. Here's the POSSIBLE profile that the DiamCalc program comes up with in regards to a stone with those stats. Great numbers...
I've also posted a DiamCalc simulated
IdealScope image as well. This is probably a gorgeous stone Simon.
Light Return (mono)…...: 1.00 Very Good
Light Return (stereo)…..: 0.99 Very Good
(Non) Leakage (mono)..: 0.98 Very Good
(Non) Leakage (stereo).: 1.00 Very Good
Contrast............................: 0.95 Very Good
(Non) FishEye Effect…...: 1.00 Very Good
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IdealScope- In general, the darker pink areas indicate areas of greater light return, with the lighter pink areas indicating areas of lesser light return. The black areas indicate areas of greater contrast, with the gray areas indicating areas of lesser contrast. The white areas indicate areas of light leakage. A good explanation of the
IdealScope image along with examples can be found at https://www.pricescope.com/idealscope_indx.asp
Disclaimer- The facet arrangement and symmetry of the image will probably vary from your actual diamond, which may affect the light performance indicated. The computer generates an image with “perfect” symmetry, which is rare. Also, the star/lower girdle facet lengths may be different from your diamond. The computer simulation is reproduced best when the actual diamond is being viewed and the image "tweaked" to the appearance of the diamond, or Sarin info is downloaded directly into the program. However, this "blind" reproduction should be helpful in considering the major light performance aspects..
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