Ideal rating

Date: 11/16/2004 12:39:15 AM
Author:secluded
Some vendors advertised that some of their diamonds are ideal cut eventhough the GIA that comes with it never said 'ideal' - I only see good, very good and excellent on the GIA report. What method do they use to determine the diamond is of 'ideal' cut.

Hello Secluded,

On a GIA report, a grade of "Excellent" for polish or symmetry is commensurate with the AGS grade of "Ideal."

CUT grading is separate from polish & symmetry. The AGS does grade cut, and a cut grade of 0 (Ideal) indicates a set of specific proportions falling in a desired range. In order to determine if a GIA graded stone falls within AGS "Ideal" cut a Sarin or Ogi report detailing specific measurements is necessary.

Thank you John for educate me about this subject. Very interesting indeed.

Date: 11/16/2004 1:38:38 AM
Author: secluded
Thank you John for educate me about this subject. Very interesting indeed.

Secluded, you''re very welcome.

For more information on AGS "Ideal" cut, click here (tutorial).