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Home Jewelry Know your stone carat size and weight from measurements.

Jewelry

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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