Ring size
Size
Ring inner and outer diameter chart
All Ravi Charme ring sizes are listed in standard Japanese sizes.
Japanese display size
Inner circumference (mm)
Ring diameter (mm)
No. 3
42.9
13.6
No. 4
44.0
14.0
No. 5
45.0
14.3
No. 6
46.1
14.6
No. 7
47.1
15.0
No. 8
48.2
15.3
No. 9
49.2
15.6
No. 10
50.3
16.0
No. 11
51.3
16.3
No. 12
52.4
16.6
No. 13
53.4
17.0
No. 14
54.5
17.3
No. 15
55.5
17.6
No. 16
56.6
18.0
No. 17
57.6
18.3
No. 18
58.6
18.6
No. 19
59.7
19.0
No. 20
60.7
19.3
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