1. Measured by the size of the ring that is already worn.
Use the ring from the finger you want to know the size.
Take a ruler and measure the diameter of your ring in millimeters.
You should measure from the inner edge and compare it to the size chart.
2. Measure from the finger you will wear the ring on.
Use rope, thread or cut paper into long strips. The width of the paper is about 0.5 centimeters, then wrap it around the finger that needs to know the size without being too loose or too tight Mark the point where the edges of the paper meet. and then use a ruler to measure the length by comparing the dimensions in millimeters which millimeters you measure will be the same size as your ring
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