Size Guide

Sizing Guide
To determine your correct ring size, we recommend measuring your finger rather than measuring another ring.
Wrap a piece of string or a strip of paper around the base of your finger.
Use a pen to mark the point on the string where the ends meet.
Measure the length of the string in millimeters (recommended) or inches using a ruler.
Refer to the sizing chart at the bottom of this page. Use the measurement you found in the first column (labeled "Finger Circumference in mm") to identify the appropriate size according to Cartier’s collections.
Tips
Ensure that the chosen size allows enough room for the ring to slide comfortably along your finger.