DIMOND SIZE CHART

Cushion 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
3.25 mm.
0.25 ct.
4.9 mm.
0.50 ct.
5.25 mm.
0.75 ct.
5.5 mm.
1.00 ct.
6 mm.
1.25 ct.
6.5 mm.
1.50 ct.
6.75 mm.
1.75 ct.
7 mm.
2.00 ct.
7.5 mm.
2.50 ct.
8 mm.
3.00 ct.
8.5 mm.
3.50 ct.
9 mm.
4.00 ct.
9.3 mm.
4.50 ct.
9.5 mm.
5.00 ct.
MM Size Carat Weight
3.25 mm.
0.25 ct.
4.2 mm.
0.40 ct.
4.9 mm.
0.50 ct.
5.25 mm.
0.75 ct.
5.5 mm.
1.00 ct.
6 mm.
1.25 ct.
6.5 mm.
1.50 ct.
6.75 mm.
1.75 ct.
7 mm.
2.00 ct.
7.5 mm.
2.50 ct.
MM Size Carat Weight
8 mm.
3.00 ct.
8.5 mm.
3.50 ct.
9 mm.
4.00 ct.
9.3 mm.
4.50 ct.
9.5 mm.
5.00 ct.
10 mm.
5.62 ct.
11 mm.
7.44 ct.
6.75 mm.
9.52 ct.
8.5 mm.
12.66 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