There are different grading systems to define diamond cut but the most common agreed on one is the cut chart created by gia since it s known to be the best diamond certification lab.
Excellent cut diamond gia.
The gia diamond cut scale for standard round brilliant diamonds in the d to z diamond color range contains 5 grades ranging from excellent to poor and is the definitive scale for classifying diamond cuts.
What is diamond cut grading chart.
There are five cut grades.
Gia cut grading chart categorizes diamond cut into 5 grades.
Gia uses a 5 grade hierarchy for cut.
These diamonds represent the highest cut grade that the gia awards their diamonds.
Excellent cut diamonds provide the highest level of fire and brilliance.
Because almost all of the incoming light is reflected through the table the diamond radiates with magnificent sparkle the wording here is significant.
Poor fair good very good and excellent called ideal as well.
A gia report can list overall cut grade as excellent with either or both polish and symmetry grades being at least very good.
The gia cut grading system applies to the most popular cutting style the standard round brilliant and all clarities across the d to z color range.
Gia s approach to diamond cut grade is a proportion based quality system for round brilliant colorless diamonds.
Excellent ex very good vg good g fair f and poor p.
The gia suggest that diamond with an excellent grade provide the highest possible level of fire and brilliance.
How does pavilion depth affect a diamond s cut.
Excellent very good good fair and poor.