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January 12th 2022

Marquise Cut Diamond Size Chart

By Devin Jones

See the average surface area and dimensions for marquise cut diamonds from 0.3 carats to 5 carats.

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

Marquise Cut Diamond Carat Size Chart

Marquise Carat Weight Marquise Surface Area (sq. mm)
0.3 ct. 11.71
0.4 ct. 14.24
0.5 ct. 16.56
0.6 ct. 18.75
0.7 ct. 20.82
0.8 ct. 22.79
0.9 ct. 24.69
1 ct. 26.52
1.1 ct. 28.29
1.2 ct. 30.01
1.3 ct. 31.69
1.4 ct. 33.32
1.5 ct. 34.92
1.6 ct. 36.49
1.7 ct. 38.02
1.8 ct. 39.52
1.9 ct. 41.00
2 ct. 42.45
2.1 ct. 43.88
2.2 ct. 45.29
2.3 ct. 46.68
2.4 ct. 48.05
2.5 ct. 49.40
2.6 ct. 50.73
2.7 ct. 52.05
2.8 ct. 53.35
2.9 ct. 54.64
3 ct. 55.91
3.1 ct. 57.17
3.2 ct. 58.41
3.3 ct. 59.65
3.4 ct. 60.87
3.5 ct. 62.08
3.6 ct. 63.27
3.7 ct. 64.46
3.8 ct. 65.64
3.9 ct. 66.81
4 ct. 67.97
4.1 ct. 69.12
4.2 ct. 70.26
4.3 ct. 71.39
4.4 ct. 72.51
4.5 ct. 73.62
4.6 ct. 74.73
4.7 ct. 75.83
4.8 ct. 76.92
4.9 ct. 78.01
5 ct. 79.08

Marquise Carat Size vs. Surface Area

The above diamond size chart compares marquise cut diamonds of various carat weights (x-axis) to their corresponding surface areas (y-axis). 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 marquise 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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