Currency

RING DIAMETER (MM) USA/CANADA

14.0mm

3

14.4mm

3.5

14.8mm

4

15.2mm

4.5

15.6mm

5

16.0mm

5.5

16.5mm

6

16.9mm

6.5

17.3mm

7

17.7mm

7.5

18.2mm

8

18.6mm

8.5

19.0mm

9

19.4mm

9.5

19.8mm

10

20.2mm

10.5

20.6mm

11

21.0mm

11.5

21.4mm

12

21.8mm

12.5

22.2mm

13

22.6mm

13.5