YOU ARE CORDIALLY INVITED TO JOIN US AT THE JCK SHOW 2025
MID’s exhibition booth (7067) will be greeting buyers from all over the world. MID House of Diamonds will be among the exhibitors at the JCK SHOW.
Come say Hi at Booth: 7067
MID House of Diamonds will be among the exhibitors at the June 2020 JCK Vegas Show. Come say Hi!
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Understanding mm to carat and how diamond size in millimeters relates to carat weight is essential when choosing a diamond. Because shape and cut affect how a diamond appears, using an accurate mm to carat conversion chart helps you confidently compare sizes and weights for any diamond
MM Size | Carat Weight |
|---|---|
0.8 mm. | 0.0025 ct. |
1 mm. | 0.005 ct. |
1.15 mm. | 0.0067 ct. |
1.12 mm. | 0.0075 ct. |
1.25 mm. | 0.01 ct. |
1.3 mm. | 0.01 ct. |
1.5 mm. | 0.015 ct. |
1.75 mm. | 0.02 ct. |
1.8 mm. | 0.025 ct. |
2 mm. | 0.03 ct. |
2.25 mm. | 0.04 ct. |
2.5 mm. | 0.06 ct. |
2.75 mm. | 0.08 ct. |
3 mm. | 0.11 ct. |
3.25 mm. | 0.14 ct. |
3.5 mm. | 0.17 ct. |
3.75 mm. | 0.21 ct. |
4 mm. | 0.25 ct. |
4.25 mm. | 0.28 ct. |
4.5 mm. | 0.36 ct. |
4.75 mm. | 0.44 ct. |
5.0 mm. | 0.50 ct. |
5.25 mm. | 0.56 ct. |
5.5 mm. | 0.66 ct. |
5.75 mm. | 0.75 ct. |
6 mm. | 0.84 ct. |
6.25 mm. | 0.93 ct. |
6.5 mm. | 1.00 ct. |
6.8 mm. | 1.25 ct. |
MM Size | Carat Weight |
|---|---|
7 mm. | 1.30 ct. |
7.3 mm. | 1.50 ct. |
7.5 mm. | 1.67 ct. |
7.75 mm. | 1.75 ct. |
8 mm. | 2.00 ct. |
8.25 mm. | 2.11 ct. |
8.5 mm. | 2.43 ct. |
8.7 mm. | 2.50 ct. |
9 mm. | 2.75 ct. |
9.1 mm. | 3.00 ct. |
9.5 mm. | 3.35 ct. |
9.75 mm. | 3.61 ct. |
10 mm. | 3.87 ct. |
10.25 mm. | 4.16 ct. |
10.5 mm. | 4.41 ct. |
10.75 mm. | 4.57 ct. |
11 mm. | 4.91 ct. |
11.25 mm. | 5.49 ct. |
11.5 mm. | 5.85 ct. |
12 mm. | 6.84 ct. |
12.25 mm. | 7.26 ct. |
12.5 mm. | 7.36 ct. |
12.75 mm. | 7.52 ct. |
13 mm. | 8.51 ct. |
13.5 mm. | 9.53 ct. |
14 mm. | 10.49 ct. |
15 mm. | 12.89 ct. |
16 mm. | 16.06 ct. |
MM Size | Carat Weight |
|---|---|
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. |
7 mm. | 2.00 ct. |
7.5 mm. | 2.50 ct. |
MM Size | Carat Weight |
|---|---|
8 mm. | 3.00 ct. |
8.5 mm. | 3.50 ct. |
9 mm. | 4.12 ct. |
9.5 mm. | 5.09 ct. |
10 mm. | 5.62 ct. |
11 mm. | 7.44 ct. |
12 mm. | 9.52 ct. |
13 mm. | 12.66 ct. |
MM Size | Carat 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. | 1.71 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. |
13×8 mm. | 2.98 ct. |
11×8 mm. | 3.00 ct. |
MM Size | Carat Weight |
|---|---|
12×8 mm. | 3.00 ct. |
12×7 mm. | 3.12 ct. |
12×9 mm. | 3.44 ct. |
14×8 mm. | 3.47 ct. |
13×9 mm. | 4.11 ct. |
14×9 mm. | 4.25 ct. |
15×9 mm. | 5.06 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. |
MM Size | Carat Weight |
|---|---|
3×2 mm. | 0.10 ct. |
3.5×2 mm. | 0.12 ct. |
4×2 mm. | 0.15 ct. |
4×3 mm. | 0.20 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. |
6.7×4.5 mm. | 0.88 ct. |
7×5 mm. | 1.00 ct. |
7.3×5.3 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. |
MM Size | Carat Weight |
|---|---|
9×7 mm. | 2.50 ct. |
10×7.5 mm. | 3.00 ct. |
9.5×7.5 mm. | 3.21 ct. |
10×8 mm. | 3.79 ct. |
11×9 mm. | 5.21 ct. |
12×8 mm. | 5.34 ct. |
12×10 mm. | 6.00 ct. |
14×8 mm. | 6.25 ct. |
13×9 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. |
MM Size | Carat Weight |
|---|---|
4.5×3.5 mm. | 0.21 ct. |
5×3 mm. | 0.21 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. |
9×7 mm. | 2.00 ct. |
MM Size | Carat Weight |
|---|---|
10×8 mm. | 2.50 ct. |
10.5×8.5 mm. | 2.88 ct. |
12×8 mm. | 3.00 ct. |
11×9 mm. | 3.85 ct. |
12×10 mm. | 5.05 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. |
MM Size | Carat 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. | 0.26 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 Size | Carat 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. | 3.67 ct. |
8.75 mm. | 4.10 ct. |
9 mm. | 4.12 ct. |
9.5 mm. | 5.09 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. |
MM Size | Carat Weight |
|---|---|
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. |
7 mm. | 2.00 ct. |
7.5 mm. | 2.50 ct. |
MM Size | Carat Weight |
|---|---|
8 mm. | 3.00 ct. |
8.5 mm. | 3.50 ct. |
9 mm. | 4.12 ct. |
9.5 mm. | 5.09 ct. |
10 mm. | 5.62 ct. |
11 mm. | 7.44 ct. |
12 mm. | 9.52 ct. |
13 mm. | 12.66 ct. |
MM Size | Carat Weight |
|---|---|
5×3 mm. | 0.31 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. | 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 Size | Carat Weight |
|---|---|
10×8 mm. | 3.50 ct. |
11×9 mm. | 5.05 ct. |
12×9 mm. | 6.06 ct. |
11.5×10 mm. | 6.45 ct. |
13×9 mm. | 6.54 ct. |
12×10 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. |
MM Size | Carat 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. |
MM Size | Carat Weight |
|---|---|
8 mm. | 2.00 ct. |
8.5 mm. | 2.50 ct. |
9 mm. | 3.00 ct. |
10 mm. | 3.50 ct. |
11 mm. | 4.41 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.
|
MM Size | Carat 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. |
MM Size | Carat Weight |
|---|---|
9.5×4.7 mm. | 0.85 ct. |
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. |
13×6.5 mm. | 2.00 ct. |
14×7 mm. | 2.50 ct. |
15×7 mm. | 3.00 ct. |
14×8 mm. | 3.00 ct. |
15×7.5 mm. | 3.25 ct. |
15×8 mm. | 3.44 ct. |
16×8 mm. | 3.86 ct. |
16.5×8.25 mm. | 4.00 ct. |
17×8.5 mm. | 4.88 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. |
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