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Home > Diamonds > Ring Size Guide
Ring Size Guide
Measurement Instructions:
  1. Cut a strip of paper a 1/4 inch wide (6 mm).
  2. Wrap the paper snugly around the finger (without applying pressure)
    and mark the paper where it meets.
  3. Then, lay out the paper and measure it with a ruler.
  4. Now, compare with the chart below.
Diameter Circumference USA UK Europe Italy
mm        
14.24 44.74 3�   4.74  
14.45 45.40 3�   5.40 5.5
14.65 46.02 3�   6.02  
14.86 46.68 4   6.68 7
15.07 47.34 4�   7.34  
15.27 47.97 4�   7.97 8
15.48 48.63 4�   8.63  
15.70 49.32 5 J� 9.32 9.5
15.90 49.95 5� K 9.95  
16.10 50.58 5� K� 10.58 11
16.31 51.24 5� L 11.24  
16.51 51.87 6 L� 11.87 12
16.73 52.56 6�   12.56  
16.92 53.16 6�   13.16 13.5
17.14 53.85 6�   13.85  
17.35 54.51 7   14.51 14.5
17.56 55.00 7�   15.00  
17.75 55.76 7�   15.76 16
17.97 56.45 7�   16.45  
18.19 57.15 8   17.15 17
18.39 57.77 8�   17.77  
18.59 58.40 8�   18.40 19
18.78 59.00 8�   19.00  
Diameter Circumference USA UK Europe Italy
mm        
18.99 59.66 9   19.66 20
19.22 60.38 9�   20.38  
19.41 60.98 9�   20.98 21
19.63 61.67 9�   21.67  
19.84 62.33 10   22.33 22.5
20.05 63.00 10�   23.00  
20.24 63.59 10�   23.59 24
20.46 64.28 10�   24.28  
20.68 64.97 11   24.97 25
20.88 65.60 11�   25.60  
21.08 66.22 11�   26.22 26.5
21.30 66.92 11� X� 26.92  
21.49 67.51 12 Y 27.51 27.5
21.71 68.20 12� Y� 28.20  
21.89 68.77 12� Z 28.77 29
22.12 69.49 12�   29.49  
22.33 70.15 13   30.15 30
22.54 70.81 13�   30.81  
22.75 71.47 13�   31.47 31.5
22.92 72.01 13� Z+2.5 32.01  
23.16 72.76 14   32.76 33
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