good cut or not from certificate facts

[mbn]

Is it true that for princess cut with GIA report, I can't tell whether stone is good cut or not without crown and pavilion angle info?

 

[pricescope]

Well, you can tell something like if the stone is too deep or too shallow or has to big table.Crown and pavilion data would help to narrow the choice. However, the best would be to examine the stone alive with an expert or compare many diamonds and select the prettiest.Checking the stone with independent appraiser is a good idea anyway since you will need appraisal for insurance.