What does "Star 52" or "Star 53" Mean?

[jpk1102]

I''m trying to figure out what Star: 52 and Star: 53 Means on an AGS cert?
Don''t think I''ve seen that described in the educational materials I''ve read.
This notation is on an RB Ideal Cut Stone AGS Cert and a on a RB ACA H&A AGS cert.
Is it preferable or not?

 

[DiamondExpert]

It''s the length of the star facets, expressed as the % of the distance between the edge of the table and the girdle edge.

 

[jpk1102]

Thank you very much for your reply. As a newbie, I couldn''t figure why it was on some AGS certificates and not others. Is the inclusion of this information on AGS certifications recent?