Precious Carbon Ring Size Guide

Your experience with diamond jewelry should be as flawless as your cuts. That’s why at Precious Carbon, we’ve crafted a ring sizing page that makes getting the perfect fit simple, accurate, and stress-free.
Why Ring Sizing Matters
A well-fitted ring offers comfort, security, and elegance. Whether it's an engagement ring or a timeless band, the right size prevents slipping, avoids resizing hassles, and ensures lifelong wearability. A slightly ill-fitting ring can feel uncomfortable or risk damage to delicate settings.
How to Measure Your Ring Size at Home
Printable Ring Size Chart (Preferred Method)
- Print the chart at 100% scale (make sure it isn't resized by checking with a ruler). Simply follow the guide, and you'll know your size in just a few minutes.
- Place a ring that fits you well directly on the chart and match the inner edge to find your size.
- Or use the paper sizer: cut, wrap it snugly around your finger, and note the size where it overlaps.
String or Paper Strip Method

- Wrap a thin strip of paper, floss, or string around your finger's base.
- Mark the overlap, measure the length in millimeters, and match it to the size chart.
- This method is quick but less precise than the printable chart.
Measure an Existing Ring

- Use calipers or a ruler to measure the inner diameter of a ring that fits well.
- Reference this measurement on the international size chart to find your equivalent.
Professional Assistance & Support

Need help? Our Precious Carbon diamond experts are ready to guide you:
- Contact us for measurement assistance.
- Every delivery includes our free 90-day ring resizing guarantee — ensuring the perfect fit.
Ring Size FAQs
What if my ring doesn’t fit?
Don’t worry! Precious Carbon offers complimentary resizing within 90 days of purchase (subject to style limitations).
Can a ring be resized multiple times?
Yes—within safe limits. Our team will advise the best approach to maintain integrity and brilliance.
What's the average ring size?
Women’s sizes usually fall between 5 and 7, while men’s sizes often range from 8 to 10, depending on style and finger size.
How to estimate size if it’s a surprise?
Try measuring a similar ring your partner wears, consult close friends, or go slightly larger and resize later.