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Know your stone carat size and weight from measurements.
by Lalit Mac
on
You made a great choice as you decided to go with our simulated cubic zirconia (a great alternative to the Real Diamonds). Now it’s time to pick your favorite shape, mm size, carat weight and more. Click on the the cut below to view its millimeter to carat conversion chart.
Round
MM Size | Carat Weight |
0.8 | 0.0025 |
1 | 0.005 |
1.12 | 0.0075 |
1.15 | 0.0067 |
1.25 | 0.01 |
1.3 | 0.01 |
1.5 | 0.015 |
1.75 | 0.02 |
1.8 | 0.025 |
2 | 0.03 |
2.25 | 0.04 |
2.5 | 0.06 |
2.75 | 0.08 |
3 | 0.11 |
3.25 | 0.14 |
3.5 | 0.17 |
3.75 | 0.21 |
4 | 0.25 |
4.25 | 0.28 |
4.5 | 0.36 |
4.75 | 0.44 |
5 | 0.46 |
5.25 | 0.56 |
5.5 | 0.66 |
5.75 | 0.76 |
6 | 0.84 |
6.25 | 0.93 |
6.5 | 1.03 |
6.75 | 1.24 |
MM Size | Carat Weight |
7 | 1.28 |
7.25 | 1.49 |
7.5 | 1.67 |
7.75 | 1.75 |
8 | 2.04 |
8.25 | 2.11 |
8.5 | 2.43 |
8.75 | 2.55 |
9 | 2.75 |
9.25 | 3.05 |
9.5 | 3.35 |
9.75 | 3.61 |
10 | 3.87 |
10.25 | 4.16 |
10.5 | 4.41 |
10.75 | 4.57 |
11 | 4.91 |
11.25 | 5.49 |
11.5 | 5.85 |
12 | 6.84 |
12.25 | 7.26 |
12.5 | 7.36 |
12.75 | 7.52 |
13 | 8.51 |
13.5 | 9.53 |
14 | 10.49 |
15 | 12.89 |
16 | 16.06 |
Princess
MM Size | Carat Weight |
1.5 | 0.015 |
1.75 | 0.03 |
2 | 0.06 |
2.25 | 0.08 |
2.5 | 0.1 |
2.75 | 0.13 |
3 | 0.18 |
3.25 | 0.26 |
3.5 | 0.29 |
3.75 | 0.31 |
4 | 0.39 |
4.25 | 0.44 |
4.5 | 0.56 |
4.75 | 0.64 |
5 | 0.71 |
5.25 | 0.75 |
5.5 | 0.99 |
5.75 | 1.11 |
6 | 1.24 |
6.25 | 1.39 |
MM Size | Carat Weight |
6.5 | 1.59 |
6.75 | 1.75 |
7 | 1.96 |
7.25 | 2.01 |
7.5 | 2.4 |
7.75 | 2.74 |
8 | 3.01 |
8.25 | 3.24 |
8.5 | 3.67 |
8.75 | 4.1 |
9 | 4.12 |
9.5 | 5.09 |
9.75 | 5.36 |
10 | 5.62 |
10.25 | 5.76 |
10.5 | 5.99 |
11 | 7.44 |
11.5 | 9.44 |
12 | 9.52 |
Marquise
MM Size | Carat Weight |
3 x 1.5 | 0.025 |
3.5 x 1.75 | 0.065 |
3.5 x 2 | 0.07 |
3.75 x 1.75 | 0.11 |
4 x 2 | 0.1 |
4.25 x 2.25 | 0.12 |
5 x 2.5 | 0.14 |
5 x 3 | 0.2 |
5.5 x 2.75 | 0.16 |
5.5 x 3 | 0.18 |
6 x 3 | 0.25 |
6.5 x 3 | 0.23 |
7 x 3 | 0.3 |
7 x 3.5 | .35 |
7 x 4 | .34 |
7.5 x 3.5 | 0.33 |
8 x 4 | 0.47 |
9 x 4.5 | 0.71 |
MM Size | Carat Weight |
9 x 5 | 0.76 |
9.5 x 2 | 0.85 |
10 x 5 | 0.95 |
11 x 5.5 | 1.25 |
11.5 x 6 | 1.33 |
12 x 6 | 1.62 |
12 x 6.5 | 1.71 |
13 x 6.5 | 2.11 |
14 x 7 | 2.48 |
15 x 7.5 | 3.09 |
14 x 8 | 3 |
15 x 7 | 3.12 |
15 x 8 | 3.44 |
16 x 8 | 3.86 |
17 x 8.5 | 4.88 |
17.5 x 10 | 5.5 |
20 x 8 | 7.08 |
20 x 10 | 7.94 |
20 x 11 | 9.5 |
Radiant
MM Size | Carat Weight |
4.5 x 3.5 | 0.34 |
5 x 3 | 0.31 |
6 x 3 | 0.41 |
6 x 4 | .60 |
6.5 x 4.5 | 0.83 |
7 x 5 | 1.14 |
7.25 x 5.25 | 1.24 |
7.5 x 5.5 | 1.47 |
8 x 6 | 1.74 |
8.5 x 6.5 | 2.25 |
9 x 7 | 2.62 |
9.5 x 7.5 | 3.18 |
10 x 7 | 3.31 |
MM Size | Carat Weight |
10 x 8 | 3.49 |
11 x 9 | 5.05 |
11.5 x 10 | 6.45 |
12 x 9 | 6.06 |
12 x 10 | 6.79 |
13 x 9 | 6.54 |
13 x 11 | 9.33 |
13.5 x 11.5 | 10.19 |
14 x 10 | 8.47 |
14 x 12 | 12.14 |
15 x 11 | 11.48 |
16 x 12 | 14.22 |
Cushion
MM Size | Carat Weight |
4 | 0.25 |
4.5 | 0.36 |
5 | 0.46 |
5.25 | 0.56 |
5.5 | 0.66 |
5.75 | 0.76 |
6 | 0.84 |
6.25 | 0.93 |
6.5 | 1.03 |
6.75 | 1.24 |
7 | 1.28 |
7.5 | 1.67 |
MM Size | Carat Weight |
8 | 2.04 |
8.5 | 2.43 |
9 | 2.75 |
9.5 | 3.35 |
10 | 3.87 |
10.5 | 4.41 |
11 | 4.91 |
11.5 | 5.85 |
12 | 6.84 |
13 | 8.51 |
14 | 10.49 |
15 | 12.89 |
Pear
MM Size | Carat Weight |
3 x 2 | 0.13 |
4 x 2.5 | 0.18 |
4 x 3 | 0.21 |
5 x 3 | 0.25 |
5 x 4 | 0.35 |
6 x 4 | 0.39 |
6.5 x 4.5 | 0.57 |
7 x 5 | 0.71 |
8 x 5 | 0.81 |
8.5 x 5.5 | 1.08 |
8 x 6 | 1.25 |
9 x 6 | 1.33 |
9 x 7 | 1.75 |
10 x 6 | 1.71 |
10 x 7 | 1.8 |
10 x 8 | 2.46 |
11 x 7.50 | 2.61 |
11 x 8 | 3 |
12 x 7 | 3.12 |
MM Size | Carat Weight |
12 x 8 | 3 |
12 x 9 | 3.44 |
13 x 8 | 2.98 |
14 x 8 | 3.47 |
13 x 9 | 4.11 |
14 x 9 | 4.25 |
15 x 9 | 5.06 |
14 x 10 | 5.41 |
13 x 11 | 5.65 |
15 x 10 | 5.75 |
15 x 11 | 7.36 |
16 x 9 | 5.86 |
16 x 10 | 6.27 |
16 x 12 | 8.99 |
17 x 10 | 6.46 |
18 x 11 | 8.14 |
18 x 12 | 9.35 |
18 x 13 | 10.21 |
Oval
MM Size | Carat Weight |
4.5 x 3.5 | 0.21 |
5 x 3 | 0.21 |
5 x 4 | 0.35 |
5.5 x 3.5 | 0.33 |
6 x 4 | 0.43 |
6.5 x 4.5 | 0.65 |
6 x 5 | 0.61 |
7 x 5 | 0.76 |
7.5 x 5.5 | 0.98 |
8 x 6 | 1.21 |
8.5 x 6.5 | 1.46 |
9 x 6 | 1.41 |
9 x 7 | 1.86 |
MM Size | Carat Weight |
10 x 8 | 2.54 |
10.5 x 8.5 | 2.88 |
11 x 9 | 3.85 |
12 x 8 | 2.99 |
12 x 10 | 5.05 |
14 x 10 | 5.81 |
13 x 11 | 6.05 |
14 x 12 | 8.21 |
15 x 12 | 8.76 |
16 x 12 | 9.32 |
16 x 14 | 11.88 |
18 x 13 | 12.86 |
20 x 15 | 14.96 |
Heart
MM Size | Carat Weight |
3.5 | 0.18 |
4 | 0.25 |
4.25 | 0.28 |
4.5 | 0.34 |
4.75 | 0.38 |
5 | 0.44 |
5.5 | 0.61 |
6 | 0.74 |
6.25 | 0.83 |
6.5 | 0.93 |
7 | 1.13 |
7.5 | 1.59 |
MM Size | Carat Weight |
8 | 1.71 |
9 | 2.41 |
9.5 | 2.9 |
10 | 3.16 |
11 | 4.41 |
12 | 5.66 |
13 | 7.88 |
14 | 9.38 |
15 | 10.79 |
16 | 13.27 |
18 | 15.33 |
Emerald
MM Size | Carat Weight |
3 x 2 | 0.1 |
3.5 x 2 | 0.12 |
4 x 2 | 0.15 |
4 x 3 | 0.2 |
5 x 3 | 0.29 |
5.5 x 3.5 | 0.46 |
5.5 x 4 | 0.48 |
6 x 4 | 0.66 |
6.5 x 4.5 | 0.88 |
7 x 5 | 1.06 |
7.25 x 5.25 | 1.24 |
7.5 x 5.5 | 1.45 |
8 x 6 | 1.74 |
8.5 x 6.5 | 2.17 |
MM Size | Carat Weight |
9 x 7 | 2.62 |
9.5 x 7.5 | 3.21 |
10 x 7 | 3.01 |
10 x 8 | 3.79 |
11 x 9 | 5.21 |
12 x 8 | 5.34 |
12 x 10 | 6 |
13 x 9 | 6.38 |
14 x 8 | 6.25 |
14 x 10 | 8.48 |
13 x 11 | 9.13 |
14 x 12 | 11.26 |
16 x 12 | 14.22 |
Triangle
MM Size | Carat Weight |
2.5 | 0.08 |
3 | 0.12 |
3.5 | 0.18 |
4 | 0.25 |
4.25 | 0.32 |
4.5 | 0.37 |
4.75 | 0.42 |
5 | 0.45 |
5.25 | 0.53 |
5.5 | 0.66 |
5.75 | 0.71 |
6 | 0.76 |
6.25 | 0.86 |
6.5 | 0.94 |
6.75 | 1.02 |
MM Size | Carat Weight |
7 | 1.11 |
7.25 | 1.32 |
7.5 | 1.45 |
7.75 | 1.69 |
8 | 1.79 |
8.25 | 1.86 |
9 | 2.15 |
9.25 | 2.54 |
9.75 | 3.25 |
10 | 3.52 |
11 | 4.74 |
12 | 6.03 |
13 | 8.12 |
14 | 9.83 |
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