Engagement rings are often surprise gifts, and getting the size right first time is important. At Rêve Diamonds, we make this easy with a detailed sizing chart and practical measurement guidance. If you are unsure, our experts are always on hand to help — and we offer a complimentary first resize on all rings.
We recommend measuring your finger at the end of the day when fingers are at their largest. If in doubt, always size up — it is much easier to resize a ring smaller.
If you are in London, you are welcome to visit our Mayfair showroom at 14 Hanover Square for a professional ring sizing, completely free of charge and with no obligation to purchase.
Download and print our ring size chart to find your ring size at home. Place an existing ring flat on the circles in the chart — the ring should sit just inside the circle with the grey line still visible around the edge. Match the circle to find your ring size.
DOWNLOAD RING SIZE CHART PDF
| UK Size | USA / Canada | Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| F | 3.0 | 13.92 | 43.65 |
| G | 3.5 | 14.31 | 44.90 |
| H | 4.0 | 14.70 | 46.20 |
| I | 4.5 | 15.09 | 47.45 |
| J | 5.0 | 15.87 | 48.70 |
| K | 5.5 | 15.90 | 49.95 |
| L | 6.0 | 16.26 | 51.25 |
| M | 6.5 | 16.65 | 52.45 |
| N | 7.0 | 17.04 | 53.70 |
| O | 7.5 | 17.45 | 55.00 |
| P | 8.0 | 17.86 | 56.25 |
| Q | 8.5 | 18.27 | 57.50 |
| R | 9.0 | 18.68 | 58.75 |
| S | 9.5 | 19.09 | 60.00 |
| T | 10.0 | 19.50 | 61.25 |
| U | 10.5 | 19.91 | 62.50 |
| V | 11.0 | 20.32 | 63.75 |
| W | 11.5 | 20.73 | 65.00 |
| X | 12.0 | 21.14 | 66.30 |
| Y | 12.5 | 21.55 | 67.50 |
| Z | 13.0 | 21.96 | 68.75 |