I advise you not to get this stone. Don't buy an SI stone where it looks too good to be true.
This is based on clouds not seen and has been given SI for a reason. It's much better to have white crystals by the crown, That explain the grading, so that you know the rest of the diamond is crystal clear, than to get diffused clouds. Additionally am idealscope would not show any problems as this not an optical problem, but a transparency issue. I would put your purchase on hold and keep searching.
This looks good, primary inclusion seems to be a feather, but it seems very superficial and thin. Optical symmetry seems good. You would have to enquire if visible at an angle. Or your original diamonds.
Regardless don't forget to ask for a JA advantage program discount, some stones will get you a few hundred $ off
https://www.jamesallen.com/mobile/l...g-color-si1-clarity-excellent-cut-sku-4104755
Additionally @rockysalamander, thanks for the education in this thread, I've enjoyed reading. Although not sure why you prefer 35.5/40.6 to 35/40.8 which makes a fantastic combination. 40.9 average would be rounded to 41 with GIA so that is at least reassuring that a steeper pavilion wouldn't be rounded down. BGD comes to mind as a superideal vendor that places emphasis on steeper end of superideal diamonds with many diamonds having both >34.5 and >40.7.
I remember Serg posting that well cut stones with tight parameters with 35/41 combos can appear to display more brilliance than ones that traditionally follow traditional inverse relationship, (although I'm in area with low WiFi at present and cannot locate the reference).
At present JA currently have quite a few >35 >40.8 diamonds in their TH range that achieve AGS0 (although I acknowledge this is a spectrum).
This is based on clouds not seen and has been given SI for a reason. It's much better to have white crystals by the crown, That explain the grading, so that you know the rest of the diamond is crystal clear, than to get diffused clouds. Additionally am idealscope would not show any problems as this not an optical problem, but a transparency issue. I would put your purchase on hold and keep searching.
This looks good, primary inclusion seems to be a feather, but it seems very superficial and thin. Optical symmetry seems good. You would have to enquire if visible at an angle. Or your original diamonds.
Regardless don't forget to ask for a JA advantage program discount, some stones will get you a few hundred $ off
https://www.jamesallen.com/mobile/l...g-color-si1-clarity-excellent-cut-sku-4104755
Additionally @rockysalamander, thanks for the education in this thread, I've enjoyed reading. Although not sure why you prefer 35.5/40.6 to 35/40.8 which makes a fantastic combination. 40.9 average would be rounded to 41 with GIA so that is at least reassuring that a steeper pavilion wouldn't be rounded down. BGD comes to mind as a superideal vendor that places emphasis on steeper end of superideal diamonds with many diamonds having both >34.5 and >40.7.
I remember Serg posting that well cut stones with tight parameters with 35/41 combos can appear to display more brilliance than ones that traditionally follow traditional inverse relationship, (although I'm in area with low WiFi at present and cannot locate the reference).
At present JA currently have quite a few >35 >40.8 diamonds in their TH range that achieve AGS0 (although I acknowledge this is a spectrum).
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