Finding the
Perfect Ring Size
Ring Size Guide
At iDiamond, we understand that finding the ideal ring size is crucial to ensure your engagement or wedding ring fits comfortably and securely.
With our ring size guide, you can confidently select the perfect size, whether you’re shopping for yourself or planning a surprise for your loved one.
| US Size | Inside Circumference (mm) |
|---|---|
| 3 | 42.9 |
| 3.5 | 45.5 |
| 4 | 4.8 |
| 4.5 | 48.0 |
| 5 | 49.3 |
| 5.5 | 50.6 |
| 6 | 51.9 |
| 6.5 | 53.1 |
| 7 | 54.4 |
| 7.5 | 55.7 |
| 8 | 57.0 |
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How to Measure Your Ring Size
Measure Your Finger
- Use a Ring Sizer: The most accurate way to find your ring size is by using a ring sizer, which we can provide you by request.
- DIY Measurement: If you don’t have a ring sizer, you can measure your finger’s circumference with a strip of paper or a piece of string. Wrap it around the base of your finger and mark where it overlaps. Then, measure the length in millimeters.
Try Before You Buy
It’s always a good idea to try on a ring before making your final decision. Visit the iDiamond store to try on rings in your desired style and size. This hands-on experience can provide valuable insights into how the ring feels and looks on your finger.
Get a Professional Opinion
Our expert jewelers at iDiamond are here to assist you. If you have any questions or concerns about your ring size, don’t hesitate to reach out to us for guidance. We’re committed to ensuring that your ring fits perfectly.
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