How do I know
my ring size?
Every Luther's Diamonds ring deserves a perfect fit. Use our precise sizing guide to make sure yours sits comfortably and looks exactly as it should. Just print and measure.
Printable Ring Size Chart
Print at 100% scale on standard letter paper. Use the chart to measure your finger or an existing ring.
Download PDFMeasure at the right time
Fingers shift size throughout the day. Measure at the end of the day when your hands are at their largest and warmest.
Use a paper strip
Wrap a thin strip of paper around the base of your finger, mark where it meets, and compare against the printed chart.
Between sizes? Size up
If you fall between two sizes, choose the larger one. Our family team is happy to double-check your size before we begin.
Sizing
Get it right the first time
How do I find my ring size?
Getting the size right the first time matters, so please take a minute with it:
- Use our printable ring sizing guide, printed at 100% scale.
- Measure at the end of the day, when fingers are slightly larger, and measure twice.
- Have a ring that already fits that finger? Measure its inside diameter in millimeters and send it to us. We can work from US, EU or mm sizes.
Quarter sizes are no problem. Still unsure? Message us before you order and we'll help you decide. We also confirm your size with you before we start.
Do wide bands fit differently?
Yes. A wide band (around 5–6mm and up) covers more of your finger and feels snugger, so many people go up a quarter to half size. Eternity bands should be sized for a comfortable slide over the knuckle, since stones run all the way around.
What if my size changes later?
Life happens, and we're here for it. Reach out and our family team will look at your piece and walk you through the options. Some designs can be resized. Others, like eternity bands and bands with stones or Stone Inlay® around them, can't be without rebuilding the ring.
That's why we ask you to measure carefully and confirm your size before we start. A ring built in your size from day one always wears best.
More answers in our FAQ, or write to us anytime.