Diamond carat weight formula
Diamond size |
Round |
Princess |
carat |
mm |
mm |
0.02 |
1.7 |
1.40 |
0.03 |
2 |
1.5 x 1.5 |
0.04 |
2.25 |
1.8 x 1.8 |
0.05 |
2.4 |
1.9 x 1.9 |
0.06 |
2.6 |
2.2 x 2.2 |
0.07 |
2.7 |
2.25 x 2.25 |
0.08 |
2.8 |
2.3 x 2.3 |
0.09 |
2.9 |
2.4 x 2.4 |
0.10 |
3 |
2.5 x 2.5 |
0.12 |
3.2 |
2.6 x 2.6 |
0.14 |
3.3 |
2.7 x 2.7 |
0.15 |
3.4 |
2.8 x 2.8 |
1/5 |
3.8 |
3.2-3.4 |
1/4 |
4.1 |
3.4-3.6 |
1/3 |
4.4 |
3.7-3.8 |
3/8 |
4.8 |
3.9-4.2 |
1/2 |
5.2 |
4.3-4.6 |
5/8 |
5.6 |
4.7-4.8 |
3/4 |
5.8 |
4.9-5.0 |
1.00 |
6.50 |
|
|
|
1.15 |
6.75 |
|
|
|
1.25 |
7.00 |
|
|
|
1.35 |
7.25 |
|
|
|
1.50 |
7.50 |
|
|
|
1.75 |
7.78 |
|
|
|
2.00 |
8.00 |
|
|
|
2.25 |
8.25 |
|
|
|
2.50 |
8.75 |
|
|
|
2.75 |
9.10 |
|
|
|
3.00 |
9.50 |
|
|
|
4.00 |
10.40 |
|
|
|
5.00 |
11.20 |
|
|
|
| Diamond Size |
|
 |
 |
 |
 |
| Carat |
Oval |
Pear Shape |
Marquise |
Trillion |
Emerald Cut |
| .07-.12 |
3.5 x 2.5 |
3.75 x 2.5 |
4.0 x 2.25 |
3.50 |
|
| .13-.17 |
4 x 3. |
4.25 - 3 |
4.75 x 2.5 |
4.00 |
|
| .18 -.22 |
4.35 x 3.25 |
4.5 x 3.25 |
5.25 x 2.75 |
4.25 |
4 x 3 |
| .23 -.28 |
5 x 3.5 |
5 x 3.5 |
6 x 3 |
4.75 |
4.25 x 3.25 |
| .29-.36 |
5.25 x 3.5 |
5.5 x 3.5 |
6.5 x 3.25 |
5.00 |
4.75 x 3.25 |
| .37-.44 |
5.5 x 3.75 |
6 x 3.75 |
7 x 3.5 |
5.50 |
5 x 3.5 |
| .45 -.67 |
6 x 4 |
6.5 x 4 |
8 x 4 |
6.00 |
5.5 x 3.75 |
| .68-.88 |
6.75 x 4.75 |
7 x 4.5 |
9 x 4.5 |
7.00 |
6.5 x 4.25 |
| 1.00 |
7 x 5 |
8 x 5 |
10 x 5 |
|
7 x 5 |
| 1.50 |
8 x 6 |
9 x 6 |
11 x 5.5 |
|
8 x 6 |
| 2.00 |
8.5 x 6.5 |
10 x 7 |
12 x 6 |
|
8.5 x 6.5 |
| 2.50 |
9 x7 |
11 x7 |
13 x 6.5 |
|
9 x 7 |
| 3.00 |
10 x 8 |
12 x 8 |
14 x 7 |
|
10 x 8 |
| 4.00 |
11 x 9 |
14 x 8 |
16 x 8 |
|
11 x 9 |
| 5.00 |
12 x 10 |
15 x 9 |
16 x 8.5 |
|
12 x 10 |
|
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