Make sure you purchase a sizer with the correct metric system ... Not got a tool and urgently need your ring size? You can try a printable ring size chart, like this one from Oliver Bonas ...

Take note of the measurement in millimeters, then compare this number to a size chart from Best Brilliance to confirm your ring size. The width of the band plays a role in how snug or loose a ring ...

You can find the approximate internal dimensions of each Ring 3 size below. The above table should be used as a guide, and we don’t recommend using the dimension chart to pick an Oura Ring size.

Make sure you purchase a sizer with the correct metric system, as other countries measure ring sizes in different ways,” she adds. Not got a tool and urgently need your ring size? You can try a ...