SWS Of London Jewellery

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Ring Chart

Diam. mm Diam. inches UK USA
14.88 0.586 H 4
15.09 0.594 H 1/2 4 1/4
15.29 0.602 I 4 1/2
15.49 0.61 J 4 3/4
15.70 0.618 J 1/2 5
15.90 0.626 K 5 1/4
16.10 0.634 k 1/2 5 1/2
16.31 0.642 L 5 3/4
16.51 0.65 L 1/2 6
16.71 0.658 M 6 1/4
16.92 0.666 M 1/2 6 1/2
17.12 0.674 N 6 3/4
17.32 0.682 N 1/2 7
17.53 0.69 0 7 1/4
17.73 0.698 0 1/2 7 1/2
17.93 0.706 P 7 3/4
18.14 0.714 P 1/2 8
18.34 0.722 Q 8 1/4
18.54 0.73 Q 1/2 8 1/2
18.75 0.738 R 8 3/4
18.95 0.746 R 1/2 9
19.15 0.754 S 9 1/4
19.35 0.762 S 1/2 9 1/2
19.56 0.77 T 9 3/4
19.76 0.778 T 1/2 10
19.96 0.786 U 10 1/4
20.17 0.794 U 1/2 10 1/2
20.37 0.802 V 10 3/4
20.57 0.81 V 1/2 11
20.78 0.818 W 11 1/4
20.98 0.826 W 1/2 11 1/2
21.18 0.834 X 11 3/4
21.39 0.842 X 1/2 12
21.59 0.85 Y 12 1/4
21.79 0.858 Z 12 1/2
22.00 0.866 Z 1/2 12 3/4
22.20 0.874 13
22.40 0.882 Z1 13 1/4
22.61 0.89 13 1/2
22.81 0.898 Z2 13 3/4
23.01 0.906 Z3 14
23.22 0.914 14 1/4
23.42 0.922 Z4 14 1/2
23.62 0.93 14 3/4
23.83 0.938 15

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