ORESMITH / SIZE GUIDE
A few measurements. A better starting point. Use this guide to compare ring sizes before you choose.
01 / INSIDE DIAMETER
Do not include the metal edges. A jeweller can measure more precisely if your ruler is difficult to read.
02 / CIRCUMFERENCE
This gives a rough estimate. Check that the fit can pass your knuckle. For a closer fit check, use a ring sizer or visit a jeweller.
Approximate US size conversions in millimetres. These are reference measurements, not confirmed specifications for every Oresmith ring. Check the sizing system and available sizes on the product page.
| US size | Inside diameter (mm) | Inside circumference (mm) |
|---|---|---|
| 5 | 15.7 | 49.3 |
| 5.5 | 16.1 | 50.6 |
| 6 | 16.5 | 51.9 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7.5 | 17.7 | 55.7 |
| 8 | 18.1 | 57.0 |
| 8.5 | 18.5 | 58.3 |
| 9 | 18.9 | 59.5 |
| 9.5 | 19.4 | 60.8 |
| 10 | 19.8 | 62.1 |
| 10.5 | 20.2 | 63.4 |
| 11 | 20.6 | 64.6 |
| 11.5 | 21.0 | 65.9 |
| 12 | 21.4 | 67.2 |
| 12.5 | 21.8 | 68.5 |
| 13 | 22.2 | 69.7 |
Between two measurements? Recheck before ordering. Band width and interior shape can change the fit. If your size is not offered, contact us rather than choosing a size that is too tight or too loose.
First confirm that the product uses US ring sizes. Use the chart as a starting point, then follow any measurements or fit notes listed for that specific ring. A size in this chart does not mean it is available to buy.
No. Screen sizes and zoom levels vary. The illustrations on this page explain the method and are not drawn to a physical scale. Use a ruler, calliper or ring sizer.
Measure a ring the recipient already wears on the intended finger, or ask for their measured size. A ring worn on another finger may not be a useful match.
Resizing depends on the material and construction. Do not assume a ring can be resized. Contact us about the specific model before making alterations. For exchanges, check our current Return Policy or email our team.
Bracelets: Measure your wrist with a flexible tape, then compare with the fit range on the product page. Wrist circumference and bracelet length are different measurements. Do not assume one fit allowance works for every style.
Necklaces: Use a cord at the listed chain length to preview where it falls, then measure the cord flat. The drop depends on your neck, clothing and pendant dimensions.