SIZING
Blue Serpent Sizing Guide
Finding the right size begins with presence.
A well-fitting ring doesn’t just sit on your hand - it moves with you, becomes part of you. Use this guide to discover your fit.
How to Measure Your Ring Size
METHOD 1: Circumference (String or Paper)
- Cut a thin strip of paper or use a soft string.
- Wrap it gently around the base of your finger - snug, with space to breathe.
- Mark where the ends meet.
- Measure the length in millimeters or inches. This is your finger’s circumference.
METHOD 2: Diameter (Using a Ring You Own)
- Choose a ring that fits the same finger.
- Measure the inner diameter across its widest point, in millimeters or inches.
- Use the size chart below to match your measurement to the right fit.
Ring Size Chart
| Option 1 | Option 2 | |||
| US Size | Circumference (mm) | Circumference (inches) | Diameter (mm) | Diameter (inches) |
| 5.5 | 50.5 | 1.99 | 16.1 | 0.63 |
| 6.5 | 53.1 | 2.09 | 16.9 | 0.67 |
| 7.5 | 55.3 | 2.18 | 17.6 | 0.69 |
| 8.5 | 57.9 | 2.28 | 18.3 | 0.72 |
| 9.5 | 60.5 | 2.38 | 19 | 0.75 |
| 10.5 | 63 | 2.48 | 19.7 | 0.78 |
| 11.5 | 65.6 | 2.58 | 20.4 | 0.8 |
Tips for Measuring
- Measure your fingers at the end of the day, when they feel most natural and at ease.
- Cold hands may give you a smaller reading - let them warm before measuring.
- If you're between sizes, lean toward the larger one. A little space allows the piece to move with you.
Still Unsure?
We’re here to help. Reach out anytime at help@blue-serpent.com, and we’ll guide you through it with care.