Find your ring size at home before you order a lab-grown diamond ring: measure one you wear, or ask a jeweler.
Three routes. Our request forms take a US size from 3 to 13 in quarter sizes. They also offer "Don't know yet" and "It's a surprise".
Route 1: Measure a ring you already wear
- Pick a ring that fits the finger you are sizing.
- Measure its inside diameter in millimeters. Or trace the inside circle on paper, then photograph the tracing with a ruler beside it.
- Convert it to a US size with our ring size guide, or send us the measurement or photo.
The fastest route. It works best with a ring worn every day on that finger.
Route 2: Get sized at a jeweler
Any jeweler can measure a finger in a few minutes. Ask for a US size and send us the number. If they give more than one reading, send the one that feels right.
Route 3: Order first and resize afterwards
Custom work only. A made-to-order ring needs its size at checkout, so use Route 1 or 2.
If you can't measure first, choose "Don't know yet" on the request form. The piece is made in a best-guess size and resized afterwards.
Resizing: see our Return policy.
Full eternity bands (lab-grown diamonds all the way round) cannot be resized.
Sizing for a surprise
Borrow a ring the wearer uses on that finger and measure or trace it while it's out of sight. Then choose "It's a surprise" on the form, so we know the size is an estimate.
Which route should you choose?
- You have a ring that fits the right finger: Route 1.
- You have no ring to borrow and can visit a jeweler: Route 2.
- Neither, and the piece is custom work that can be resized: Route 3.
- A full eternity band: Route 1 or 2, before you order.
What to tell us
Send us:
- Your US size, or the measurement in millimeters.
- Which finger the ring is for.
- Whether the size is exact or an estimate.
- The design.
Questions before you order
Email info@d2diamonds.com or WhatsApp/text 786-750-5714.
Measurement to US size: ring size guide.