Diamond Carat Size Chart

Select your perfect lab grown diamond from thousands of ethically sourced diamonds.
  • Round
  • Princess
  • Asscher
  • Cushion
  • Oval
  • Radiant
  • Emerald
  • Pear
  • Heart
  • Marquise
  • Triangle
  • Trillion
  • Baguette
  • Tapered Baguette

Round Cut

MM SizeCarat Weight
0.80.0025
10.005
1.120.0075
1.150.0067
1.250.01
1.30.01
1.50.015
1.750.02
1.80.025
20.03
2.250.04
2.50.06
2.750.08
30.11
3.250.14
3.50.17
3.750.21
40.25
4.250.28
4.50.36
4.750.44
50.46
5.250.56
5.50.66
5.750.76
60.84
6.250.93
6.51.03
6.751.24
MM SizeCarat Weight
71.28
7.251.49
7.51.67
7.751.75
82.04
8.252.11
8.52.43
8.752.55
92.75
9.253.05
9.53.35
9.753.61
103.87
10.254.16
10.54.41
10.754.57
114.91
11.255.49
11.55.85
126.84
12.257.26
12.57.36
12.757.52
138.51
13.59.53
1410.49
1512.89
1616.06

Princess / Square Cut

MM SizeCarat Weight
1.50.015
1.750.03
20.06
2.250.08
2.50.1
2.750.13
30.18
3.250.26
3.50.29
3.750.31
40.39
4.250.44
4.50.56
4.750.64
50.71
5.250.75
5.50.99
5.751.11
61.24
6.251.39
MM SizeCarat Weight
6.51.59
6.751.75
71.96
7.252.01
7.52.4
7.752.74
83.01
8.253.24
8.53.67
8.754.1
94.12
9.55.09
9.755.36
105.62
10.255.76
10.55.99
117.44
11.59.44
129.52

Asscher Cut

MM SizeCarat Weight
40.39
4.50.56
50.71
5.50.99
61.24
6.51.59
71.96
7.52.4
MM SizeCarat Weight
83.01
8.53.67
94.12
9.55.09
105.62
117.44
129.52
1312.66

Cushion Cut

MM SizeCarat Weight
40.25
4.50.36
50.46
5.250.56
5.50.66
5.750.76
60.84
6.250.93
6.51.03
6.751.24
71.28
7.51.67
MM SizeCarat Weight
82.04
8.52.43
92.75
9.53.35
103.87
10.54.41
114.91
11.55.85
126.84
138.51
1410.49
1512.89

Oval Cut

MM SizeCarat Weight
4.5 x 3.50.21
5 x 30.21
5 x 40.35
5.5 x 3.50.33
6 x 40.43
6.5 x 4.50.65
6 x 50.61
7 x 50.76
7.5 x 5.50.98
8 x 61.21
8.5 x 6.51.46
9 x 61.41
9 x 71.86
MM SizeCarat Weight
10 x 82.54
10.5 x 8.52.88
11 x 93.85
12 x 82.99
12 x 105.05
14 x 105.81
13 x 116.05
14 x 128.21
15 x 128.76
16 x 129.32
16 x 1411.88
18 x 1312.86
20 x 1514.96

Radiant Cut

MM SizeCarat Weight
4.5 x 3.50.34
5 x 30.31
6 x 30.41
6 x 4.60
6.5 x 4.50.83
7 x 51.14
7.25 x 5.251.24
7.5 x 5.51.47
8 x 61.74
8.5 x 6.52.25
9 x 72.62
9.5 x 7.53.18
10 x 73.31
MM SizeCarat Weight
10 x 83.49
11 x 95.05
11.5 x 106.45
12 x 96.06
12 x 106.79
13 x 96.54
13 x 119.33
13.5 x 11.510.19
14 x 108.47
14 x 1212.14
15 x 1111.48
16 x 1214.22

Emerald Cut

MM SizeCarat Weight
3 x 20.1
3.5 x 20.12
4 x 20.15
4 x 30.2
5 x 30.29
5.5 x 3.50.46
5.5 x 40.48
6 x 40.66
6.5 x 4.50.88
7 x 51.06
7.25 x 5.251.24
7.5 x 5.51.45
8 x 61.74
8.5 x 6.52.17
MM SizeCarat Weight
9 x 72.62
9.5 x 7.53.21
10 x 73.01
10 x 83.79
11 x 95.21
12 x 85.34
12 x 106
13 x 96.38
14 x 86.25
14 x 108.48
13 x 119.13
14 x 1211.26
16 x 1214.22

Pear Cut

MM SizeCarat Weight
3 x 20.13
4 x 2.50.18
4 x 30.21
5 x 30.25
5 x 40.35
6 x 40.39
6.5 x 4.50.57
7 x 50.71
8 x 50.81
8.5 x 5.51.08
8 x 61.25
9 x 61.33
9 x 71.75
10 x 61.71
10 x 71.8
10 x 82.46
11 x 7.502.61
11 x 83
12 x 73.12
MM SizeCarat Weight
12 x 83
12 x 93.44
13 x 82.98
14 x 83.47
13 x 94.11
14 x 94.25
15 x 95.06
14 x 105.41
13 x 115.65
15 x 105.75
15 x 117.36
16 x 95.86
16 x 106.27
16 x 128.99
17 x 106.46
18 x 118.14
18 x 129.35
18 x 1310.21

Heart Cut

MM SizeCarat Weight
3.50.18
40.25
4.250.28
4.50.34
4.750.38
50.44
5.50.61
60.74
6.250.83
6.50.93
71.13
7.51.59
MM SizeCarat Weight
81.71
92.41
9.52.9
103.16
114.41
125.66
137.88
149.38
1510.79
1613.27
1815.33

Marquise Cut

MM SizeCarat Weight
3 x 1.50.025
3.5 x 1.750.065
3.5 x 20.07
3.75 x 1.750.11
4 x 20.1
4.25 x 2.250.12
5 x 2.50.14
5 x 30.2
5.5 x 2.750.16
5.5 x 30.18
6 x 30.25
6.5 x 30.23
7 x 30.3
7 x 3.5.35
7 x 43.4
7.5 x 3.50.33
8 x 40.47
9 x 4.50.71
MM SizeCarat Weight
9 x 50.76
9.5 x 50.85
10 x 50.95
11 x 5.51.25
11.5 x 61.33
12 x 61.62
12 x 6.51.71
13 x 6.52.11
14 x 72.48
15 x 7.53.09
14 x 83
15 x 73.12
15 x 83.44
16 x 83.86
17 x 8.54.88
17.5 x 105.5
20 x 87.08
20 x 107.94
20 x 119.5

Triangle Cut

MM SizeCarat Weight
2.50.08
30.12
3.50.18
40.25
4.250.32
4.50.37
4.750.42
50.45
5.250.53
5.50.66
5.750.71
60.76
6.250.86
6.50.94
6.751.02
MM SizeCarat Weight
71.11
7.251.32
7.51.45
7.751.69
81.79
8.251.86
92.15
9.252.54
9.753.25
103.52
114.74
126.03
138.12
149.83

Trillion Cut

MM SizeCarat Weight
30.12
3.50.16
3.750.19
40.23
4.250.27
4.50.31
4.750.37
50.42
5.250.49
5.50.55
5.750.64
60.7
MM SizeCarat Weight
6.250.75
6.50.91
6.750.98
71.1
7.51.21
81.75
92.35
113.66
124.9
136.42
159

Baguette Straight Cut

MM SizeCarat Weight
2 x 10.02
2 x 1.50.04
2 x 1.750.04
2.25 x 1.750.04
2.25 x 20.045
2.5 x 10.045
2.5 x 1.250.047
2.5 x 1.50.05
2.5 x 1.750.055
2.5 x 20.055
2.75 x 1.50.055
2.75 x 1.750.06
2.75 x 20.06
2.75 x 2.50.065
3 x 10.05
3 x 1.250.055
3 x 1.50.06
3 x 1.750.08
3 x 20.1
3 x 2.50.13
3.25 x 1.250.06
3.25 x 1.50.065
3.25 x 1.750.08
3.25 x 2.50.14
3.5 x 10.065
3.5 x 1.250.07
3.5 x 1.50.07
3.5 x 1.750.08
3.5 x 20.13
3.5 x 2.50.15
3.5 x 30.15
MM SizeCarat Weight
3.75 x 1.50.14
3.75 x 20.145
4 x 1.250.075
4 x 1.50.08
4 x 1.750.11
4 x 20.14
4 x 30.2
4.5 x 1.50.1
4.5 x 1.750.14
4.5 x 20.17
4.5 x 2.50.2
4.5 x 30.285
4.5 x 3.50.3
4.75 x 1.50.27
4.75 x 20.28
5 x 1.50.14
5 x 1.750.15
5 x 20.19
5 x 2.50.24
5 x 30.3
5 x 3.50.33
5 x 40.4
5.5 x 1.750.16
5.5 x 20.18
5.5 x 2.50.23
5.5 x 30.3
5.5 x 3.50.33
6 x 1.750.28
6 x 20.3
6 x 2.50.33
6 x 30.4

Baguette Tapered Cut

MM SizeCarat Weight
2 x 1.5 x 10.025
2.5 x 1.5 x 10.035
2.5 x 1.75 x 10.04
3 x 1.5 x 10.05
3 x 1.75 x 1.250.055
3 x 1.75 x 1.30.055
3 x 1.75 x 1.50.055
3 x 2 x 10.06
3 x 2 x 1.250.065
3 x 2 x 1.50.07
3 x 2 x 1.750.075
3 x 2.5 x 20.08
3.25 x 1.75 x 10.07
3.25 x 1.75 x 1.250.05
3.5 x 1.25 x 10.04
3.5 x 1.5 x 10.05
3.5 x 1.5 x 1.250.055
3.5 x 1.7 x 1.30.055
3.5 x 1.75 x 10.06
3.5 x 1.75 x 1.250.07
3.5 x 1.75 x 1.30.065
3.5 x 2 x 1.250.08
3.5 x 2 x 1.50.09
3.5 x 2.5 x 20.09
3.75 x 2 x 1.250.08
4 x 1.5 x 10.07
4 x 1.5 x 1.20.08
4 x 1.75 x 1.250.08
4 x 2 x 1.50.1
4 x 2.5 x 1.50.12
4 x 2.5 x 20.21
4 x 3 x 20.21
4.25 x 2 x 1.250.11
MM SizeCarat Weight
4.25 x 2 x 1.50.13
4.25 x 2.5 x 1.250.13
4.25 x 2.5 x 1.50.135
4.5 x 1.75 x 1.250.15
4.5 x 2 x 1.50.12
4.5 x 2.3 x 1.80.16
4.5 x 2.5 x 20.15
4.5 x 2.75 x 1.750.15
4.5 x 3 x 20.16
4.5 x 3 x 2.50.16
4.75 x 2.5 x 1.50.15
4.75 x 3 x 20.18
5 x 2 x 10.14
5 x 2 x 1.250.15
5 x 2 x 1.50.15
5 x 2.3 x 1.80.16
5 x 2.5 x 1.50.2
5 x 2.5 x 20.21
5 x 2.75 x 20.21
5 x 3 x 20.25
5 x 3.5 x 20.26
5 x 4 x 3.50.28
5.5 x 2 x 1.50.18
5.5 x 2.5 x 1.750.23
5.5 x 2.5 x 20.23
5.5 x 3 x 20.26
5.5 x 3 x 2.250.26
5.5 x 4 x 2.50.28
6 x 2 x 1.50.3
6 x 2.5 x 1.50.3
6 x 3 x 20.3
6.5 x 2.5 x 20.3
6.5 x 3 x 20.32

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