- Select the ring that matches the intended finger.
- Measure the internal diameter in mm (millimetres).
- Use the chart provided to determine your recommended size.
| INTERNAL DIAMETER (MM) | 16.5 | 17.3 | 18.1 | 19 |
| US/CANADA RING SIZE | 6 | 7 | 8 | 9 |
| UK/AUSTRALIA RING SIZE | L | N | P | R |