Conversion table for ring sizes:
US     GB  Germany  Spain/Italy   NL

5         J        49.3           9,5           15,5
5.5      K       50.6           10,5          16
6         L        51.9           12             16,5
6.5      M      53.1           13,5          17
7         N       54,4           14,5          17,25
7.5      O       55.7           16             17,5
8         P        57              17             18
8.5      Q       58.3           18,5          18,5
9         R        59.5           20             19
Take a ring that fits well to determine your ring size. Measure the diameter, if that diameter is 18,5 mm  then your ring size would be 18,5 in the Netherlands. See the corresponding US size in the table above. Always round up. All rings are created with 925 silver and genuine gemstones. 

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