French sizes correspond to the inside circumference of the ring in millimeters. The ideal size is one that allows the ring to pass over the knuckle with light to moderate resistance. If you're unsure between two sizes, choose the smaller one so we can adjust it more easily in the workshop.
To determine the right size precisely, you have two options:
1. Visit a jeweler to have your size determined by a professional.
2. Order a ring sizer to measure your size at home. You can order our ring sizer by clicking here.
We do not recommend other methods, such as using a piece of string wrapped around your finger, as this is not accurate.
--
If you want to surprise someone with a ring, here are our recommendations:
1. Use our printable paper ring sizer, carefully following the instructions, especially the "print at 100% scale" instruction, as otherwise, the measurements will be incorrect. The printable ring sizer is available here.
2. Discreetly borrow a ring that fits and have it quickly measured by a professional, or order a "triboulet" (a ring sizer) online. (Make sure to choose a ring that’s already worn on the correct finger.)
3. Measure the inside diameter of an existing ring. You can use a caliper for the most accurate measurement or a ruler in millimeters. To convert the diameter to circumference, multiply by Pi (3.14) (and divide for the inverse).
Example: 16.6mm diameter x Pi (3.14) = 52mm circumference, which is a French size 52.
--
A resizing is possible under certain conditions; please consult our return policy for more information.
Finally, if you're unsure between two sizes, choose the smaller one so we can adjust it more easily in the workshop.
