Chart of Diamond Carat Size

diamondThis chart tells you diamond size and its relationship to carat. It only applies to round cut diamonds but can give an approximate indication for other cuts of diamond such as rose cut, old mine cut, single cut and european cut.

this diamond carat chart is useful if you want to know how many carats a 5.5mm diamond is.
Similarly, if you want to know what is the mm size of a 3.10 carat diamond is, just check it on the chart.

If you have any other information about diamonds that you would like us to add to this page, please let us know.

Diamond Chart

Diamond Size Carat equivalent

1.0 mm Diamond

.005 carat

1.2 mm Diamond

.008 carat

1.3 mm Diamond

.01 carat

1.5 mm Diamond

.015 carat

1.7 mm Diamond

.02 carat

1.8 mm Diamond

.025 carat

2.0 mm Diamond

.03 carat

2.1 mm Diamond

.035 carat

2.2 mm Diamond

.04 carat

2.4 mm Diamond

.05 carat

2.5 mm Diamond

.06 carat

2.7 mm Diamond

.07 carat

2.8 mm Diamond

.08 carat

2.9 mm Diamond

.09 carat

3.0 mm Diamond

1/10 carat

3.1 mm Diamond

.11 carat

3.2 mm Diamond

.12 carat

3.3 mm Diamond

.14 carat

3.4 mm Diamond

.15 carat

3.5 mm Diamond

.16 carat

3.6 mm Diamond

.17 carat

3.7 mm Diamond

.18 carat

3.8 mm Diamond

1/5 carat

3.9 mm Diamond

.22 carat

4.0 mm Diamond

.23 carat

4.1 mm Diamond

1/4 carat

4.2 mm Diamond

.30 carat

4.4 mm Diamond

.33 carat

4.5 mm Diamond

.35 carat

4.6 mm Diamond

1/3 carat

4.8 mm Diamond

.40 carat

4.9 mm Diamond

.43 carat

5.0 mm Diamond

.47 carat

5.2 mm Diamond

1/2 carat

5.4 mm Diamond

.60 carat

5.5 mm Diamond

.63 carat

5.6 mm Diamond

.65 carat

5.8 mm Diamond

3/4 carat

6.0 mm Diamond

.80 carat

6.2 mm Diamond

.85 carat

6.4 mm Diamond

.95 carat

6.5 mm Diamond

1.00 carat

6.6 mm Diamond

1.10 carat

6.8 mm Diamond

1.17 carat

7.0 mm Diamond

1-1/4 carat

7.2 mm Diamond

1.33 carat

7.4 mm Diamond

1-1/2 carat

7.6 mm Diamond

1.60 carat

7.8 mm Diamond

1.75 carat

8.0 mm Diamond

1.90 carat

8.2 mm Diamond

2.00 carat

8.4 mm Diamond

2.15 carat

8.6 mm Diamond

2.25 carat

8.8 mm Diamond

2.50 carat

9.0 mm Diamond

2.65 carat

9.2 mm Diamond

2.85 carat

9.4 mm Diamond

3.00 carat

9.6 mm Diamond

3.15 carat

9.8 mm Diamond

3.35 carat

10.0 mm Diamond

3-1/2 carat


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