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Marquise Cut Diamond Size Chart (MM)

Wondering what a 1 carat Marquise diamond looks link on a hand? Our Marquise diamond size chart will help you convert millimeter (mm) size to carat size for Marquise cut diamonds.

Marquise Diamond Size Chart

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Marquise Diamond Sizes

Marquise MM
Size
Marquise Weight
(ct)
Black Diamond ct
weight (Approx)
Marquise MM
Size
Marquise Weight
(ct)
Black Diamond ct
weight (Approx)
3x1.5 mm. 0.03 0.03 10x5 mm. 1.00 1.40
3.5x1.75 mm. 0.07 0.08 11x5.5 mm. 1.25 1.80
3.5x2 mm. 0.07 0.08 11.5x6 mm. 1.33 1.90
4x2 mm. 0.10 0.12 12x6 mm. 1.50 2.10
3.75x1.75 mm. 0.11 0.13 13x6.5 mm. 2.00

2.80

4.25x2.25 mm. 0.12 0.14 14x7 mm. 2.50 3.50
5x2.5 mm. 0.14 0.17 15x7 mm. 3.00 4.20
5.5x2.75 mm. 0.16 0.19 14x8 mm. 3.00 4.20
5.5x3 mm. 0.18 0.22 15x7.5 mm. 3.25 4.60
5x3 mm. 0.20 0.24 15x8 mm. 3.44 4.90
6.5x3 mm. 0.23 0.28 16x8 mm. 3.86 5.50
6x3 mm. 0.25 0.30 16.5x8.25 mm. 4.00 5.60
7x3 mm. 0.30 0.36 17x8.5 mm. 4.88 6.90
7.5x3.5 mm. 0.33 0.40 17.5x10 mm. 5.50 7.70
7x4 mm. 0.34 0.41 20x8 mm. 7.08 10.00
8x4 mm. 0.50 0.65 20x10 mm. 7.94 11.20
8.75x4.25 mm. 0.70 0.91 20x11 mm. 9.50 13.30
9x4.5 mm. 0.75 1.00
9.5x4.7 mm. 0.85 1.20

 
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