RINGS: To know the size of your ring take one that you see fits on the finger or fingers where you want to wear it.

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Measure the millimeters of its inner diameter, from end to end and in a straight line.

In the following table look for the size equivalent to your measurement

NECKLACES: If you have any doubts when selecting your size of necklace or you don't know how it will look exactly, this illustration will help you decide: