DIMOND SIZE CHART

Heart Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

MM Size Carat Weight
4 mm.
0.25 ct.
5 mm.
0.50 ct.
6 mm.
0.75 ct.
6.5 mm.
1.00 ct.
7 mm.
1.25 ct.
7.5×5.5 mm.
1.50 ct.
7.7 mm.
1.75 ct.
8 mm.
2.00 ct.
8.5 mm.
2.50 ct.
9 mm.
3.00 ct.
10 mm.
3.50 ct.
10.5 mm.
4.00 ct.
11 mm.
4.50 ct.
11.5 mm.
5.00 ct.
MM Size Carat Weight
3.5 mm.
0.18 ct.
4 mm.
0.25 ct.
4.25 mm.
0.28 ct.
4.5 mm.
0.34 ct.
4.75 mm.
0.38 ct.
5 mm.
0.50 ct.
5.5 mm.
0.61 ct.
6 mm.
0.75 ct.
6.25 mm.
0.83 ct.
6.5 mm.
1.00 ct.
7 mm.
1.25 ct.
7.5 mm.
1.50 ct.
7.7 mm.
1.75 ct.
MM Size Carat Weight
8 mm.
2.00 ct.
8.5 mm.
2.50 ct.
9 mm.
3.00 ct.
10 mm.
3.50 ct.
10.5 mm.
4.00 ct.
11 mm.
4.50 ct.
11.5 mm.
5.00 ct.
12 mm.
5.66 ct.
13 mm.
7.88 ct.
14 mm.
9.38 ct.
15 mm.
10.79 ct.
16 mm.
13.27 ct.
18 mm.
15.33 ct.
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Ring Size Chart

Use our Ring Size Conversion Chart below to find your ring size in different countries.

Ring Diameter (MM) Usa/Canada Size
14.0 mm
3
14.4 mm
3.5
14.8 mm
4
15.2 mm
4.5
15.6 mm
5
16.0 mm
5.5
16.5 mm
6
16.9 mm
6.5
17.3 mm
7
17.7 mm
7.5
18.2 mm
8
18.6 mm
8.5
19.0 mm
9
19.4 mm
9.5
19.8 mm
10
20.2 mm
10.5
20.6 mm
11