I was reading CutNut's article on this site about the HCA and especially was intriqued by the page talking about how the worst performing proportions in the top grades for various grading systems score on the HCA. Very enlightening. (pardon the pun). 
I noticed that one of the columns in the chart was pavilion angle and that the AGA system was in the chart. But I don't see pavilion angle on the AGA cut charts on this site. Is pavilion angle part of the way an AGA cert is arrived at? Or do other measurements of the stone 'force' the pavilion angle into a certain range?
Thanks,
Marius

I noticed that one of the columns in the chart was pavilion angle and that the AGA system was in the chart. But I don't see pavilion angle on the AGA cut charts on this site. Is pavilion angle part of the way an AGA cert is arrived at? Or do other measurements of the stone 'force' the pavilion angle into a certain range?
Thanks,
Marius
