Ring Size Guide (US) | Lavora Diamonds
before you quote
US ring size guide
Most engagement rings land between US 5–7. Unsure? Leave size blank on your private quote — we’ll help you confirm before your 3D render.
How to measure
- Wrap a thin strip of paper around the base of the finger.
- Mark where it overlaps; measure the length in millimeters.
- Match that circumference to the chart below.
Measure at the end of the day, when fingers are warm. If between sizes, size up slightly for wider bands.
| US | Circumference (mm) | Diameter (mm) |
|---|---|---|
| 4 | 46.8 | 14.9 |
| 4.5 | 48.0 | 15.3 |
| 5 | 49.3 | 15.7 |
| 5.5 | 50.6 | 16.1 |
| 6 | 51.9 | 16.5 |
| 6.5 | 53.1 | 16.9 |
| 7 | 54.4 | 17.3 |
| 7.5 | 55.7 | 17.7 |
| 8 | 57.0 | 18.1 |
| 9 | 59.5 | 18.9 |
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