Size Guide
Finding the correct size is essential to fully enjoy your Chiara Costacurta jewelry. If you already know your Italian size, you can select it directly at the time of purchase. Alternatively, you can follow the instructions below.
Measure a ring you already own
Choose a ring you usually wear on the desired finger and measure its inner diameter in millimeters. Then compare the measurement with the dedicated table.

| Internal diameter (mm) | IT size | US size |
|---|---|---|
| 14,6 | 6 | 3.75 |
| 15,0 | 7 | 4 |
| 15,3 | 8 | 4.5 |
| 15,6 | 9 | 5 |
| 15,9 | 10 | 5.25 |
| 16,2 | 11 | 5.75 |
| 16,6 | 12 | 6 |
| 16,9 | 13 | 6.25 |
| 17,2 | 14 | 6.75 |
| 17,5 | 15 | 7 |
| 17,8 | 16 | 7.25 |
| 18,1 | 17 | 8 |
| 18,5 | 18 | 8.5 |
| 18,8 | 19 | 8.75 |
| 19,1 | 20 | 9 |
Useful tips
Finger size can vary during the day based on temperature and physical conditions. We recommend measuring at room temperature and avoiding times when your hands are particularly cold or hot.
Dedicated support
For assistance in choosing the size or for personalized requests, our team will be happy to assist you via email, WhatsApp or at our atelier in Milan.