Size chart - Rafael Jewelry Designer

Ring Inner Diameter (MM)	USA/Canada	EUROPE
14.9 mm	4	47
15.1 mm	4.25	47.5
15.3 mm	4.5	48
15.5 mm	4.75	48.5
15.7 mm	5	49
15.9	5.25	50
16.1	5.5	50.5
16.3	5.75	51
16.5	6	52
16.7	6.25	52.5
16.9	6.5	53
17.1	6.75	53.5
17.3	7	54
17.5	7.25	55
17.7	7.5	55.5
17.9	7.75	56
18.1	8	57
18.3	8.25	57.5
18.5	8.5	58
18.8	8.75	59
19.0	9	59.5
19.2	9.25	60
19.4	9.5	61
19.6	9.75	61.5
19.8	10	62
20.0	10.25	62.5
20.2	10.5	63
20.4	10.75	64
20.6	11	64.5
20.8	11.25	65
21.0	11.5	66
21.2	11.75	66.5
21.4	12	67
21.6	12.25	67.5
21.8	12.5	68
22.0	12.75	69
22.2	13	70
22.4	13.25	71
22.6	13.5	71.5
22.8	13.75	72
23.0	14	73