Carat Weight Chart
Carat Weight (ct) | Diamond Diameter (mm) |
0.25 | 4.1 |
0.50 | 5.2 |
1.00 | 6.5 |
1.50 | 7.4 |
2.00 | 8.2 |
2.50 | 8.9 |
3.00 | 9.4 |
Carat Weight (ct) | Diamond Diameter (mm) |
0.25 | 4.1 |
0.50 | 5.2 |
1.00 | 6.5 |
1.50 | 7.4 |
2.00 | 8.2 |
2.50 | 8.9 |
3.00 | 9.4 |
It isn't always the bigger the better when it comes to the size of a diamond. A few other factors may also contribute to how a piece of diamond is perceived on the wearer.
Slender fingers benefit from elongated diamond shapes like ovals, marquise, or pear, creating the illusion of length. Wider fingers, on the other hand, can be complemented by round, princess, or cushion-cut diamonds, offering a balanced and symmetrical look.
Different diamond shapes of the same carat weight impact perceived size. Round brilliant cut appears larger due to optimal light reflection. Elongated shapes like ovals and marquise create the illusion of greater size, while emerald and princess cuts may appear slightly smaller.
The choice of setting influences perceived size. High-profile settings like halo settings create the illusion of a larger diamond, while lower-profile settings like bezel settings may make the center stone appear slightly smaller.
TFR |
UK | FR | JP |
Finger Size (mm) |
3 | F | 44 |
4 |
43.8 ~ 45.3 / 14.1 |
3.5 | G 1/4 | 45 1/4 | 5~6 | 45.3 ~ 46.4 / 14.5 |
4 | H 1/2 | 46 1/2 | 7 |
46.4 ~ 47.6 |
4.5 | I 1/2 | 49 | 8 | 47.6 ~ 49.1 / 15.3 |
5 | J 1/2 | 50 | 9~10 | 49.1 ~ 50.4 / 15.7 |
5.5 | L | 51 3/4 | 11 |
50.4 ~ 51.7 |
6 | M | 52 3/4 | 12 | 51.7 ~ 52.8 / 16.5 |
6.5 | N | 54 | 13 | 52.8 ~ 54.2 / 16.9 |
7 | O | 55 1/4 | 14 | 54.2 ~ 55.3 / 17.4 |
7.5 | P | 56 1/2 | 15 | 55.3 ~ 56.8 / 17.8 |
8 | Q | 57 3/4 | 16 | 56.8 ~ 59.2 / 18.2 |
8.5 | Q 3/4 | 59 | 17 | 57.9 ~ 59.2 / 18.5 |
9 | R 3/4 | 60 1/4 | 18 | 59.2 ~ 60.8 / 18.9 |
9.5 | S 3/4 | 61 1/2 | 19 | 60.8 ~ 62.0 / 19.4 |
10 | T 1/2 | 62 3/4 | 20~21 | 62.0 ~ 63.2 / 19.8 |
10.5 | U 1/2 | 63 | 22 | 63.2 ~ 64.6 / 20.2 |
11 | V 1/2 | 65 | 23 | 64.6 ~ 66.0 / 20.7 |
Choosing the right diamond carat size is crucial when it comes to finding the perfect fit for your diamond rings or other jewelry. While personal preference plays a significant role, understanding how diamond carat sizes complement different finger sizes and shapes can help you make an informed decision.
A diamond carat is a unit of weight used to measure diamonds. One carat equals to 200 milligrams or 0.2 grams. Here's a general table that shows the approximate relationship between carat weight and diamond diameter.
Please note that these diamond measurements are approximate and can vary based on the specific cut, shape, and proportions of the diamond.
Carat Weight (ct) | Diamond Diameter (mm) |
0.25 | 4.1 |
0.50 | 5.2 |
1.00 | 6.5 |
1.50 | 7.4 |
2.00 | 8.2 |
2.50 | 8.9 |
3.00 | 9.4 |
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