Radiant cut - crown height %

[nme904]

Hi everyone,

I've been looking into purchasing a radiant shape diamond, and I've been trying to do as much research as possible. I was looking at diamonds at one online retailer's site that provides GIA reports for their diamonds. I was going to run the numbers through David Atlas's cut calculator, but it seems that the crown height % is not on the GIA report for radiant cut diamonds. Does anyone know why GIA doesn't put this on the report for radiant shape diamonds and how to get this information about a radiant shape diamond? Thanks

 

[stone-cold11]

Nope, you cannot get it from the report. The only way is to have the stone scanned/measured. Numbers are not useful for fancy cut, as these are rounded, images, preferably ASET image is much more useful.

 

[nme904]

Ok, thanks for the info. When you say that the numbers aren't useful for fancy cut diamonds, does this mean that even if I had the crown height number, the David Atlas cut calculator would not be useful? I'm asking for clarification because his calculator allows people to check the cut quality for radiant shape diamonds. Thanks again.