Sizes: we use the US scale
If the jeweller gave you a Mexican or a European size, bring it over to ours here. When in doubt, write on WhatsApp before you order.
How to measure
A ring that already fits
Measure the inner diameter in millimetres with a caliper or a fine ruler, on a ring that fits you well.
A strip of paper or thread
Wrap a strip of paper or thread around the finger and measure the circumference in millimetres. Measure at night, when the finger swells with the heat.
Ask the workshop
Send us on WhatsApp a photo of a ring that fits you, laid on a ruler. We will tell you the size.

US to Mexico size chart
The MX size is approximate; Mexican jewellers do not always agree with each other.
| US size | Inner diameter (mm) | Circumference (mm) | MX size (approx.) | EU size (approx.) |
|---|---|---|---|---|
| 3 | 14.3 | 44.9 | 3.5 | 47.8 |
| 3.5 | 14.7 | 46.0 | 4 | 49.0 |
| 4 | 15.7 | 49.3 | 6.5 | 52.5 |
| 4.5 | 16.1 | 50.6 | 7 | 53.8 |
| 5 | 16.5 | 51.8 | 8 | 55.0 |
| 5.5 | 16.9 | 53.1 | 9 | 56.3 |
| 6 | 17.3 | 54.3 | 10 | 57.6 |
| 6.5 | 17.7 | 55.6 | 11 | 58.9 |
| 7 | 18.1 | 56.8 | 12 | 60.1 |
| 7.5 | 18.5 | 58.1 | 13 | 61.4 |
| 8 | 18.9 | 59.3 | 14 | 62.7 |
| 8.5 | 19.4 | 60.9 | 15 | 64.0 |
| 9 | 19.8 | 62.2 | 16 | 65.3 |
| 9.5 | 20.2 | 63.5 | 17 | 66.5 |
| 10 | 20.6 | 64.7 | 18 | 67.8 |
| 10.5 | 21.0 | 66.0 | 19 | 69.1 |
| 11 | 21.4 | 67.2 | 20 | 70.4 |
| 11.5 | 21.8 | 68.5 | 21 | 71.6 |
| 12 | 22.2 | 69.7 | 22 | 72.9 |
Band width
Men: 6 to 9 mm. Women: 4, 6 or 8 mm. A wider band feels tighter; if you are between two sizes on an 8 or 9 mm width, write to us before ordering.
Size adjustment
We include one half-size adjustment at no cost. If the ring is engraved, confirm the fit with the workshop before engraving.