OVERALL CUT GRADE

Light Performance, Proportion Factors, and Finish are the three elements that AGSL uses to determine the final Cut Grade.

The American Gem Society Lab uses a Performance-Based Cut Grading System. The AGSL says it “Takes advantage of revolutionary hardware and software in considering a diamond's performance. The diamonds are first measured using a computerized measuring device, which also creates a three-dimensional model. The diamond grader imports the information into the AGS ray-tracing software and receives values for proportions and light performance. The diamond grader then analyzes the girdle, the culet, the symmetry, and the polish characteristics of the diamond.”

They continue to say; The AGS Performance-Based Cut Grading System takes into consideration the following 11 factors: