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    Measure an existing ring

    1. Use an existing ring that fits the desired finger.
    2. Measure the internal diameter of the ring.
    3. Use the chart below to determine your ring size.

    If your ideal fit falls between two sizes, we recommend choosing the larger size.

    Size guide

    Internal diameter (mm) Internal diameter (in) Desired size Spain/Italy France/Germany UK/Australia USA/CANADA JAPAN/CHINA
    15.9mm0.63 in10*1050K5 1/29
    16.5mm 0.65 in 12 12 52 L - M 6 11
    17.1mm 0.67 in 14 14 54 N 7 13
    17.8mm 0.70 in 16 16 56 O - P 7 3/4 15
    18.4mm 0.73 in 18* 18 58 Q 8 1/2 17
    19.1mm 0.75 in 20 20 60 R - S 9 19
    19.7mm 0.77 in 22 22 62 T 10 21
    20.3mm 0.79 in 24 24 64 U - V 10 3/4 23

    *Available in some designs