Cut grading across diamond shapes

Cut grading only tends to be provided for Round diamonds. This is because it is extremely difficult to assess the ideal proportions of the likes of Marquise and Cushion. However, there are some experts that have done research about the ideal proportions for these shapes, and thus we will provide you with a small guide below.

(Asscher and Emerald)

Excellent

Depth percentage – 58 - 65

Table percentage – 60 - 65

Very good

Depth percentage – 55 – 70

Table percentage – 59 - 70

Good

Depth percentage – 52 - 75

Table percentage – 52 - 75

Excellent

Depth percentage – 58 - 65

Table percentage – 60 - 65

Very good

Depth percentage – 55 - 70

Table percentage – 59 - 70

Good

Depth percentage – 52 - 75

Table percentage – 56 - 75

(Pear, Princess, Marquise, Radiant, Oval, and Heart)

Here is a guide to the depth percentage and table percentage you should be looking for in regards to each of the sought after grades.

Excellent

Depth percentage – 58 - 64

Table percentage 55 - 62

Very good

Depth percentage – 57 - 66

Table percentage – 53 - 64

Good

Depth percentage – 56 - 68

Table percentage – 52 - 65

Excellent

Depth percentage – 62 - 73

Table percentage - 57 – 72

Very good

Depth percentage – 60 - 77

Table percentage – 55 - 75

Good

Depth percentage – 57 - 83

Table percentage – 52 - 85

Excellent

Depth percentage – 58 - 64

Table percentage – 55 - 62

Very good

Depth percentage – 57 - 66

Table percentage – 53 - 64

Good

Depth percentage – 56 - 68

Table percentage – 52 - 65

Excellent

Depth percentage – 52 - 60

Table percentage – 55 - 62

Very good

Depth percentage – 50 - 62

Table percentage – 50 - 62

Good

Depth percentage – 45 - 65

Table percentage – 52 – 65

Excellent

Depth percentage – 58 - 64

Table percentage – 55 - 62

Very good

Depth percentage – 57 - 66

Table percentage – 53 - 64

Good

Depth percentage – 56 - 68

Table percentage – 52 - 65

Excellent

Depth percentage – 62 - 68

Table percentage – 58 - 65

Very good

Depth percentage – 58 - 70

Table percentage – 56 - 70

Good

Depth percentage – 57 - 75

Table percentage – 54 -75

This is the most brilliant of all the diamond cuts. Here is a guide to the depth percentage and table percentage you should be looking for in regards to each of the sought after grades.

Excellent

Depth percentage – 60 - 63

Table percentage – 53 – 58

Very good

Depth percentage – 58 - 64

Table percentage – 52 - 62

Good

Depth percentage – 56 - 67

Table percentage – 50 - 67

This is the most brilliant of all the diamond cuts. Here is a guide to the depth percentage and table percentage you should be looking for in regards to each of the sought after grades.

Excellent

Depth percentage – 62 - 68

Table percentage – 58 - 65

Very good

Depth percentage – 58 - 70

Table percentage – 56 - 70

Good

Depth percentage – 57 - 75

Table percentage – 54 - 75