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January 28th 2022

Asscher Cut Diamond Size Chart

By Devin Jones

Chart of diamond sizes showing the relationship between carat size, diameter, and surface area for asscher cut diamonds.

Round Diamond Size Chart Round
Cushion Diamond Size Chart Cushion
Emerald Diamond Size Chart Emerald
Oval Diamond Size Chart Oval
Princess Diamond Size Chart Princess
Pear Diamond Size Chart Pear
Radiant Diamond Size Chart Radiant
Asscher Diamond Size Chart Asscher
Heart Diamond Size Chart Heart
Marquise Diamond Size Chart Marquise

Asscher Cut Diamond Carat Size Chart

Asscher Carat Weight Asscher Surface Area (sq. mm)
0.3 ct. 13.50
0.4 ct. 16.39
0.5 ct. 19.05
0.6 ct. 21.54
0.7 ct. 23.89
0.8 ct. 26.14
0.9 ct. 28.30
1 ct. 30.38
1.1 ct. 32.40
1.2 ct. 34.35
1.3 ct. 36.26
1.4 ct. 38.11
1.5 ct. 39.93
1.6 ct. 41.70
1.7 ct. 43.44
1.8 ct. 45.14
1.9 ct. 46.82
2 ct. 48.47
2.1 ct. 50.09
2.2 ct. 51.68
2.3 ct. 53.25
2.4 ct. 54.80
2.5 ct. 56.33
2.6 ct. 57.84
2.7 ct. 59.33
2.8 ct. 60.80
2.9 ct. 62.25
3 ct. 63.69
3.1 ct. 65.11
3.2 ct. 66.52
3.3 ct. 67.91
3.4 ct. 69.29
3.5 ct. 70.66
3.6 ct. 72.01
3.7 ct. 73.35
3.8 ct. 74.68
3.9 ct. 76.00
4 ct. 77.31
4.1 ct. 78.61
4.2 ct. 79.89
4.3 ct. 81.17
4.4 ct. 82.44
4.5 ct. 83.70
4.6 ct. 84.94
4.7 ct. 86.18
4.8 ct. 87.41
4.9 ct. 88.64
5 ct. 89.85

Asscher Carat Size vs. Surface Area

The below diamond size chart shows the changing dynamic between an increase in carat size and the respective increase in a asscher cut diamond's visual appearance as measured by surface area. While carat weight is typically thought of as the best indication of a diamond's size (meaning visual appearance), carat is actually a measure of weight. Diamonds of the same carat size can vary slightly in their visual appearance depending on how they are cut. For instance, a diamond with a deeper cut will appear smaller than a diamond of the same carat weight with a shallower cut.

For our asscher cut diamond analysis we averaged the diameters of hundreds of thousands to come up with a simple exponential function (shown on the chart below). Using this formula we can study the corresponding changes in diameter and surface area for a given change in carat weight. Interestingly, as the carat size increases we notice a significant slowing of the surface area. This is because carat weight scales as a measure of volume (mm cube) while surface area scales at a slower rate (mm squared).

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