The parameters are outside of the GIA Excellent grade (and out of AGS 0) with a 60 table and it only gets more outside those ranges with a 60.5 table (Plug in 60 and 61 tables in that link).
Note that 55% of all diamonds get GIA excellent grading which is a fairly wide range. So you *really* don't want to be outside of that range.
In case you didn't see it, I posted instructions on how to get HCA access free in the other thread you started yesterday, about getting an HCA code from members here.
Can someone please share HCA code or key as I'm trying to check specs if diamond studs asap.
Thanks
Entering a round diamonds specs into the HCA is step 1 of finding a diamond with top light performance.
HCA is a step 1, and is a rejection tool, not a final acceptance tool.
Reject rounds above HCA 2, but further investigate the candidates that score under 2.
Step 2 is to evaluate candidates under HCA 2 with a properly taken Idealscope picture, and/or post them here for the approval from our prosumers.