Ring Size Guide

Ring Size Guide

Choosing the right ring size is just as important as choosing the diamond itself. At 101 Carat, we want your jewellery to fit perfectly – secure enough to stay in place and comfortable enough to pass smoothly over the knuckle.

Method 1: Measuring an Existing Ring

Ideal for a surprise

  • Use a ruler or caliper for measurement.
  • Measure the internal diameter in mm, excluding the metal.
  • Compare the result with our size chart.

Method 2: Measuring Your Finger Circumference

If you are buying for yourself

  • Wrap a strip of paper around the base of your finger.
  • Mark the exact point where the paper overlaps.
  • Measure the length in millimetres and compare it with the chart.
SIZE (EU) DIAMETER (MM)