Ring Size Guide
Find Your Perfect Fit
CBT Diamonds | Carat · Bond · Trust
A ring is more than jewelry; it’s a pledge of trust. To ensure your Bond is perfectly represented, we provide professional tools and a comprehensive guide to help you find your ideal size with absolute confidence (Trust).
I. Order a Professional Ring Sizer Kit
Experience salon-grade precision at home through our "Deposit Now, Credit Later" program.
- How it Works: Pay a small deposit to unlock your kit.
- 100% Credit: Receive an exclusive discount code via email to deduct the deposit from your final jewelry order.
- Shipping: Dispatched within 7 business days.
II. How to Use the Sizer
1. Slide the sizer onto your finger just like a real ring.
2. Find the size that slides over your knuckle with slight resistance but fits snugly at the base.
3. The number indicated is your US Ring Size.
III. Size Conversion Chart
| US Size | Inside Circumference (mm) | Inside Diameter (mm) |
|---|---|---|
| 4 | 46.8 | 14.9 |
| 5 | 49.3 | 15.7 |
| 6 | 51.9 | 16.5 |
| 7 | 54.4 | 17.3 |
| 8 | 57.0 | 18.1 |
| 9 | 59.5 | 19.0 |
If you need an immediate estimate using the string method, measure your circumference in mm and match it above.
IV. Measurement Tips
Timing
Measure your finger at the end of the day when it is at its largest. Cold weather can shrink your fingers.
The Knuckle
Ensure the size can slide over the knuckle comfortably with slight resistance.
Wide Bands
For rings with a wider band (>4mm), we recommend going up by half a size.
