Can a diamond be a triple ideal cut and still be a stone with a GIA Report?
YES. Since GIA only gives cut grades on polish and symmetry, to know whether a diamond would receive the status of triple ideal some supplemental info is required to make this judgment. This information can be easily provided by a gemologist or jeweler who has the equipment necessary to grade proportions (such as discussed in chapters Cut Grading Methods (a prior chapter) & Cut Analysis 101 (you’re coming to this). Here is an example of diamond that has a GIA Report showing the highest GIA grades possible for polish and symmetry (the Excellent/Excellent grading) and the supplemental data showing the proportions falling within the AGS ideal zone. The proportion analysis on this diamond (as seen below) reveals a “0” according to AGS standards for an ideal cut. Hence a triple ideal cut diamond with a GIA Report.
