OMNIA ring sizes correspond to the measurements in the table below. You can find your number through the diameter of a ring you already own or through the contour of your finger.

To discover your size through the diameter, measure the interior of a ring and find the corresponding measurement in the table. Alternatively, you can use a string or ribbon and place it around your finger. Then cut it as if it were a ring, measure it and find the corresponding measurement in the table.