Blue Engagement Ring For Women

U.S.A.
Size

Circumference
(mm)

Diameter (mm)

Australian /UK
Size

4 1/2

48

15.27

I 1/2

5

49

15.70

J 1/2

5 1/2

51

16.10

L

6

52

16.51

M

6 1/2

53

16.92

N

7

55

17.35

O

7 1/2

56

17.75

P

8

57

18.19

Q

8 1/2

58

18.53

Q 1/2

9

59

18.89

R 1/2

9 1/2

61

19.41

S 1/2

10

62

19.84

T 1/2

10 1/2

63

20.20

U 1/2

11

65

20.68

V 1/2

11 1/2

66

21.08

W 1/2

12

68

21.49

Y

12 1/2

69

21.89

Z

13

70

22.33

Z 1/2

14

76

24

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