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Diamond Size Chart

Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

Select your diamond shape:

Round Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
4 mm0.25 ct
5.0 mm0.50 ct
5.75 mm0.75 ct
6.5 mm1.00 ct
6.8 mm1.25 ct
7.3 mm1.50 ct
7.75 mm1.75 ct
8 mm2.00 ct
8.7 mm2.50 ct
9.1 mm3.00 ct
9.75 mm3.50 ct
10.25 mm4.00 ct
10.75 mm4.50 ct
11 mm5.00 ct
Round diamond on hand
MM SizeCarat Weight
0.8 mm0.0025 ct
1 mm0.005 ct
1.1 mm0.0067 ct
1.2 mm0.009 ct
1.25 mm0.01 ct
1.3 mm0.01 ct
1.5 mm0.015 ct
1.75 mm0.02 ct
1.8 mm0.025 ct
2 mm0.03 ct
2.2 mm0.04 ct
2.5 mm0.06 ct
2.75 mm0.08 ct
3 mm0.10 ct
3.25 mm0.14 ct
3.5 mm0.17 ct
3.75 mm0.21 ct
4 mm0.25 ct
4.25 mm0.28 ct
4.5 mm0.36 ct
4.75 mm0.44 ct
5.0 mm0.50 ct
5.25 mm0.56 ct
5.5 mm0.66 ct
5.75 mm0.75 ct
6 mm0.84 ct
6.25 mm0.93 ct
6.5 mm1.00 ct
6.8 mm1.25 ct
MM SizeCarat Weight
7 mm1.30 ct
7.3 mm1.50 ct
7.5 mm1.67 ct
7.75 mm1.75 ct
8 mm2.00 ct
8.25 mm2.11 ct
8.5 mm2.43 ct
8.7 mm2.50 ct
9 mm2.75 ct
9.1 mm3.00 ct
9.5 mm3.35 ct
9.75 mm3.50 ct
10 mm3.87 ct
10.25 mm4.00 ct
10.5 mm4.41 ct
10.75 mm4.50 ct
11 mm5.00 ct
11.25 mm5.49 ct
11.5 mm5.85 ct
12 mm6.84 ct
12.25 mm7.26 ct
12.5 mm7.36 ct
12.75 mm7.52 ct
13 mm8.51 ct
13.5 mm9.53 ct
14 mm10.49 ct
15 mm12.89 ct
16 mm16.06 ct

Princess Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
3.25 mm.0.25 ct.
4.5 mm.0.50 ct.
5 mm.0.75 ct.
5.5 mm.1.00 ct.
6 mm.1.25 ct.
6.5 mm.1.50 ct.
6.75 mm.1.75 ct.
7 mm.2.00 ct.
7.5 mm.2.50 ct.
8 mm.3.00 ct.
8.5 mm.3.50 ct.
8.75 mm.4.00 ct.
9.25 mm.4.50 ct.
9.5 mm.5.00 ct.
Princess diamond on hand
MM SizeCarat Weight
1.5 mm.0.015 ct.
1.75 mm.0.03 ct.
2 mm.0.06 ct.
2.25 mm.0.08 ct.
2.5 mm.0.10 ct.
2.75 mm.0.13 ct.
3 mm.0.18 ct.
3.25 mm.0.25 ct.
3.5 mm.0.29 ct.
3.75 mm.0.31 ct.
4 mm.0.39 ct.
4.25 mm.0.44 ct.
4.5 mm.0.50 ct.
4.75 mm.0.64 ct.
5 mm.0.75 ct.
5.25 mm.0.90 ct.
5.5 mm.1.00 ct.
5.75 mm.1.11 ct.
6 mm.1.25 ct.
6.25 mm.1.39 ct.
MM SizeCarat Weight
6.5 mm.1.50 ct.
6.75 mm.1.75 ct.
7 mm.2.00 ct.
7.25 mm.2.01 ct.
7.5 mm.2.50 ct.
7.75 mm.2.74 ct.
8 mm.3.00 ct.
8.25 mm.3.24 ct.
8.5 mm.3.50 ct.
8.75 mm.4.00 ct.
9.25 mm.4.50 ct.
9.5 mm.5.00 ct.
9.75 mm.5.36 ct.
10 mm.5.62 ct.
10.25 mm.5.76 ct.
10.5 mm.5.99 ct.
11 mm.7.44 ct.
11.5 mm.9.44 ct.
12 mm.9.52 ct.

Cushion Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
3.25 mm.0.25 ct.
4.9 mm.0.50 ct.
5.25 mm.0.75 ct.
5.5 mm.1.00 ct.
6 mm.1.25 ct.
6.5 mm.1.50 ct.
6.75 mm.1.75 ct.
7 mm.2.00 ct.
7.5 mm.2.50 ct.
8 mm.3.00 ct.
8.5 mm.3.50 ct.
9 mm.4.00 ct.
9.3 mm.4.50 ct.
9.5 mm.5.00 ct.
Cushion diamond on hand
MM SizeCarat Weight
3.25 mm.0.25 ct.
4.2 mm.0.40 ct.
4.9 mm.0.50 ct.
5.25 mm.0.75 ct.
5.5 mm.1.00 ct.
6 mm.1.25 ct.
6.5 mm.1.50 ct.
6.75 mm.1.75 ct.
7 mm.2.00 ct.
7.5 mm.2.50 ct.
MM SizeCarat Weight
8 mm.3.00 ct.
8.5 mm.3.50 ct.
9 mm.4.00 ct.
9.3 mm.4.50 ct.
9.5 mm.5.00 ct.
10 mm.5.62 ct.
11 mm.7.44 ct.
12 mm.9.52 ct.
13 mm.12.66 ct.

Emerald Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
4.30×3 mm.0.25 ct.
6×4 mm.0.50 ct.
6.5×4.5 mm.0.75 ct.
7×5 mm.1.00 ct.
7.5×5.3 mm.1.25 ct.
7.5×5.5 mm.1.50 ct.
8×6 mm.1.75 ct.
8.5×6.5 mm.2.00 ct.
9×7 mm.2.50 ct.
9.3×7.5 mm.3.00 ct.
9.75×7 mm.3.50 ct.
10×8 mm.4.00 ct.
10.5×8.5 mm.4.50 ct.
11×9 mm.5.00 ct.
Emerald diamond on hand
MM SizeCarat Weight
3×2 mm.0.10 ct.
3.5×2 mm.0.12 ct.
4×2 mm.0.15 ct.
4×3 mm.0.18 ct.
4.30×3 mm.0.25 ct.
5×3 mm.0.29 ct.
5.5×3.5 mm.0.46 ct.
6×4 mm.0.50 ct.
6.5×4.5 mm.0.75 ct.
6.75×4.5 mm.0.88 ct.
7×5 mm.1.00 ct.
7.5×5.3 mm.1.25 ct.
7.5×5.5 mm.1.50 ct.
8×6 mm.1.75 ct.
8.5×6.5 mm.2.00 ct.
9×7 mm.2.50 ct.
MM SizeCarat Weight
9.3×7.5 mm.3.00 ct.
9.5×7.5 mm.3.21 ct.
9.75×7 mm.3.50 ct.
9.9×7.8 mm.3.79 ct.
10×8 mm.4.00 ct.
10.5×8.5 mm.4.50 ct.
11×9 mm.5.00 ct.
12×8 mm.5.34 ct.
12×10 mm.6.00 ct.
14×8 mm.6.25 ct.
14×9 mm.6.38 ct.
14×10 mm.8.48 ct.
13×11 mm.9.13 ct.
14×12 mm.11.26 ct.
16×12 mm.14.22 ct.

Heart Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
4 mm.0.25 ct.
5 mm.0.50 ct.
6 mm.0.75 ct.
6.5 mm.1.00 ct.
7 mm.1.25 ct.
7.5 mm.1.50 ct.
7.7 mm.1.75 ct.
8 mm.2.00 ct.
8.5 mm.2.50 ct.
9 mm.3.00 ct.
10 mm.3.50 ct.
10.5 mm.4.00 ct.
11 mm.4.50 ct.
11.5 mm.5.00 ct.
Heart diamond on hand
MM SizeCarat Weight
3.5 mm.0.18 ct.
4 mm.0.25 ct.
4.25 mm.0.28 ct.
4.5 mm.0.34 ct.
4.75 mm.0.38 ct.
5 mm.0.50 ct.
5.5 mm.0.61 ct.
6 mm.0.75 ct.
6.25 mm.0.83 ct.
6.5 mm.1.00 ct.
7 mm.1.25 ct.
7.5 mm.1.50 ct.
7.7 mm.1.75 ct.
MM SizeCarat Weight
8 mm.2.00 ct.
8.5 mm.2.50 ct.
9 mm.3.00 ct.
10 mm.3.50 ct.
10.5 mm.4.00 ct.
11 mm.4.50 ct.
11.5 mm.5.00 ct.
12 mm.5.66 ct.
13 mm.7.88 ct.
14 mm.9.38 ct.
15 mm.10.79 ct.
16 mm.13.27 ct.
18 mm.15.33 ct.

Marquise Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
6×3 mm.0.25 ct.
8×4 mm.0.50 ct.
9×4.5 mm.0.75 ct.
10×5 mm.1.00 ct.
11×5.5 mm.1.25 ct.
12×6 mm.1.50 ct.
12.5×6.25 mm.1.75 ct.
13×6.5 mm.2.00 ct.
14×7 mm.2.50 ct.
15×7 mm.3.00 ct.
15×8 mm.3.50 ct.
16.5×8.25 mm.4.00 ct.
16.75×8.5 mm.4.50 ct.
17×8.5 mm.5.00 ct.
Marquise diamond on hand
MM SizeCarat Weight
3×1.5 mm.0.025 ct.
3.5×1.75 mm.0.065 ct.
3.5×2 mm.0.07 ct.
4×2 mm.0.10 ct.
3.75×1.75 mm.0.11 ct.
4.25×2.25 mm.0.12 ct.
5×2.5 mm.0.14 ct.
5.5×2.75 mm.0.16 ct.
5.5×3 mm.0.18 ct.
5×3 mm.0.20 ct.
6.5×3 mm.0.23 ct.
6×3 mm.0.25 ct.
7×3 mm.0.30 ct.
7.5×3.5 mm.0.33 ct.
7×4 mm.0.34 ct.
8×4 mm.0.50 ct.
8.75×4.25 mm.0.70 ct.
9×4.5 mm.0.75 ct.
9.5×4.7 mm.0.85 ct.
MM SizeCarat Weight
10×5 mm.1.00 ct.
11×5.5 mm.1.25 ct.
11.5×6 mm.1.33 ct.
12×6 mm.1.50 ct.
12.5×6.25 mm.1.75 ct.
13×6.5 mm.2.00 ct.
14×7 mm.2.50 ct.
15×7 mm.3.00 ct.
15×7.5 mm.3.25 ct.
15×8 mm.3.50 ct.
16×8 mm.3.86 ct.
16.5×8.25 mm.4.00 ct.
16.75×8.5 mm.4.50 ct.
17×8.5 mm.5.00 ct.
17.5×10 mm.5.50 ct.
20×8 mm.7.08 ct.
20×10 mm.7.94 ct.
20×11 mm.9.50 ct.

Oval Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
5×3 mm.0.25 ct.
6×4 mm.0.50 ct.
7×5 mm.0.75 ct.
7.7×5.7 mm.1.00 ct.
8×6 mm.1.25 ct.
8.5×6.5 mm.1.50 ct.
9×6.5 mm.1.75 ct.
9×7 mm.2.00 ct.
10×8 mm.2.50 ct.
12×8 mm.3.00 ct.
12×8.5 mm.3.50 ct.
12.5×8.5 mm.4.00 ct.
12.75×8.5 mm.4.50 ct.
12×10 mm.5.00 ct.
Oval diamond on hand
MM SizeCarat Weight
3.6×2.7 mm.0.10 ct.
4×3 mm.0.15 ct.
4.5×3.5 mm.0.20 ct.
5×3 mm.0.25 ct.
5.5×3.5 mm.0.33 ct.
5×4 mm.0.35 ct.
6×4 mm.0.50 ct.
6×5 mm.0.61 ct.
6.5×4.5 mm.0.65 ct.
7×5 mm.0.75 ct.
7.7×5.7 mm.1.00 ct.
8×6 mm.1.25 ct.
9×6 mm.1.41 ct.
8.5×6.5 mm.1.50 ct.
9×6.5 mm.1.75 ct.
9×7 mm.2.00 ct.
MM SizeCarat Weight
10×8 mm.2.50 ct.
10.5×8.5 mm.2.88 ct.
12×8 mm.3.00 ct.
12×8.5 mm.3.50 ct.
11×9 mm.3.85 ct.
12.5×8.5 mm.4.00 ct.
12.75×8.5 mm.4.50 ct.
12×10 mm.5.00 ct.
14×10 mm.5.81 ct.
13×11 mm.6.05 ct.
14×12 mm.8.21 ct.
15×12 mm.8.76 ct.
16×12 mm.9.32 ct.
16×14 mm.11.88 ct.
18×13 mm.12.86 ct.
20×15 mm.14.96 ct.

Pear Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
5×3 mm.0.25 ct.
6×4 mm.0.50 ct.
7×5 mm.0.75 ct.
7.7×5.7 mm.1.00 ct.
8×6 mm.1.25 ct.
8.5×6.5 mm.1.50 ct.
10×6 mm.1.75 ct.
9×7 mm.2.00 ct.
10×8 mm.2.50 ct.
12×8 mm.3.00 ct.
12×9 mm.3.50 ct.
14×8 mm.4.00 ct.
14.5×9 mm.4.50 ct.
15×9 mm.5.00 ct.
Pear diamond on hand
MM SizeCarat Weight
3×2 mm.0.13 ct.
4×2.5 mm.0.18 ct.
4×3 mm.0.21 ct.
5×3 mm.0.25 ct.
5×4 mm.0.35 ct.
6×4 mm.0.50 ct.
6.5×4.5 mm.0.60 ct.
7×5 mm.0.75 ct.
7.5×5.5 mm.0.85 ct.
7.7×5.7 mm.1.00 ct.
8×6 mm.1.25 ct.
8.5×6.5 mm.1.50 ct.
10×6 mm.1.75 ct.
8.7×6.7 mm.1.80 ct.
9×7 mm.2.00 ct.
10×8 mm.2.50 ct.
11×7.50 mm.2.61 ct.
11×8 mm.2.70 ct.
12×8 mm.3.00 ct.
MM SizeCarat Weight
12×7 mm.3.12 ct.
13×8 mm.3.40 ct.
12×9 mm.3.50 ct.
14×8 mm.4.00 ct.
13×9 mm.4.11 ct.
14×9 mm.4.25 ct.
14.5×9 mm.4.50 ct.
15×9 mm.5.00 ct.
14×10 mm.5.41 ct.
13×11 mm.5.65 ct.
15×10 mm.5.75 ct.
16×9 mm.5.86 ct.
16×10 mm.6.27 ct.
17×10 mm.6.46 ct.
15×11 mm.7.36 ct.
18×11 mm.8.14 ct.
16×12 mm.8.99 ct.
18×12 mm.9.35 ct.
18×13 mm.10.21 ct.

Radiant Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
4.3×3 mm.0.25 ct.
6×4 mm.0.50 ct.
6.5×4.5 mm.0.75 ct.
7×5 mm.1.00 ct.
7.3×5.5 mm.1.25 ct.
7.5×5.8 mm.1.50 ct.
8×6 mm.1.75 ct.
8.2×6.2 mm.2.00 ct.
9×7 mm.2.50 ct.
9.5×7.5 mm.3.00 ct.
10×8 mm.3.50 ct.
10.2×8.2 mm.4.00 ct.
10.5×8.5 mm.4.50 ct.
11×9 mm.5.00 ct.
Radiant diamond on hand
MM SizeCarat Weight
4.3×3 mm.0.25 ct.
4.5×3.5 mm.0.34 ct.
6×3 mm.0.41 ct.
6×4 mm.0.50 ct.
6.5×4.5 mm.0.75 ct.
7×5 mm.1.00 ct.
7.3×5.5 mm.1.25 ct.
7.5×5.8 mm.1.50 ct.
8×6 mm.1.75 ct.
8.2×6.2 mm.2.00 ct.
8.5×6.5 mm.2.25 ct.
9×7 mm.2.50 ct.
9.5×7.5 mm.3.00 ct.
10×7 mm.3.31 ct.
MM SizeCarat Weight
10×8 mm.3.50 ct.
10.2×8.2 mm.4.00 ct.
10.5×8.5 mm.4.50 ct.
11×9 mm.5.00 ct.
12×9 mm.6.06 ct.
11.5×10 mm.6.45 ct.
13×9 mm.6.54 ct.
13.2×9.2 mm.6.79 ct.
14×10 mm.8.47 ct.
13×11 mm.9.33 ct.
13.5×11.5 mm.10.19 ct.
15×11 mm.11.48 ct.
14×12 mm.12.14 ct.
16×12 mm.14.22 ct.

Asscher Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM SizeCarat Weight
3.25 mm.0.25 ct.
4.5 mm.0.50 ct.
5 mm.0.75 ct.
5.5 mm.1.00 ct.
6 mm.1.25 ct.
6.5 mm.1.50 ct.
6.7 mm.1.75 ct.
7 mm.2.00 ct.
7.5 mm.2.50 ct.
8 mm.3.00 ct.
8.5 mm.3.50 ct.
9 mm.4.00 ct.
9.25 mm.4.50 ct.
9.5 mm.5.00 ct.
Asscher diamond on hand
MM SizeCarat Weight
3.25 mm.0.25 ct.
4 mm.0.39 ct.
4.5 mm.0.50 ct.
5 mm.0.75 ct.
5.5 mm.1.00 ct.
6 mm.1.25 ct.
6.5 mm.1.50 ct.
6.7 mm.1.75 ct.
7 mm.2.00 ct.
7.5 mm.2.50 ct.
MM SizeCarat Weight
8 mm.3.00 ct.
8.5 mm.3.50 ct.
9 mm.4.00 ct.
9.25 mm.4.50 ct.
9.5 mm.5.00 ct.
10 mm.5.62 ct.
11 mm.7.44 ct.
12 mm.9.52 ct.
13 mm.12.66 ct.