Step 1
Grinding the Band
Cast in solid gold or platinum, the band is first ground down by hand to its true shape and width, and the seat for every diamond is prepared all the way around the circle.
From Our Workshop · Set Stone by Stone
Watch how your eternity band is made.
An eternity band is a single unbroken circle of diamonds, and every one is set by hand, all the way around, in our family workshop. These are the stages yours passes through before it reaches you.
Step 2
Setting the Eternity of Stones
This is the heart of it. Every stone is set into the band by hand, one after another, all the way around, each aligned to the last so the row reads as one continuous line of light. On a full eternity, that's hours of patient, exacting work.
Step 3
Hand Polished
With the full circle set, the band is hand-polished through progressively finer abrasives until the metal is mirror-bright and every diamond sits clean and clear.
Step 4
The Finished Band
The result: an endless loop of light, even and bright from every angle. Jack checks each stone and the full circle personally before it leaves the workshop.
Every Detail
Specifications & quality.
Specifications
Material
14K Solid Gold or Platinum 950
Main Stone
Diamond
Band Width
4mm
Key features
Graded & checked.
Diamond Quality
Graded in our studio: DEF color, VS2+ clarity, every stone checked under the loupe before it's set.
Matched All the Way Around
Every diamond in your band is matched to its neighbors for size, color and sparkle, so the circle reads as one even line of light from every angle.
Lab-Grown Diamonds
Real diamonds, grown in a lab: physically, chemically and optically the same as mined diamonds.
Ring Size Guide
US & Canada Ring Sizes
| US Size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| 3 | 14.1 | 44.2 |
| 3.5 | 14.5 | 45.5 |
| 4 | 14.9 | 46.8 |
| 4.5 | 15.3 | 48.0 |
| 5 | 15.7 | 49.3 |
| 5.5 | 16.1 | 50.6 |
| 6 | 16.5 | 51.9 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7.5 | 17.7 | 55.7 |
| 8 | 18.2 | 57.0 |
| 8.5 | 18.6 | 58.3 |
| 9 | 19.0 | 59.5 |
| 9.5 | 19.4 | 60.8 |
| 10 | 19.8 | 62.1 |
| 10.5 | 20.2 | 63.4 |
| 11 | 20.6 | 64.6 |
| 11.5 | 21.0 | 65.9 |
| 12 | 21.4 | 67.2 |
UK & Australia Ring Sizes
| UK Size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| F | 14.1 | 44.2 |
| G | 14.5 | 45.5 |
| H | 14.9 | 46.8 |
| I | 15.3 | 48.0 |
| J | 15.7 | 49.3 |
| K | 16.1 | 50.6 |
| L | 16.5 | 51.9 |
| M | 16.9 | 53.1 |
| N | 17.3 | 54.4 |
| O | 17.7 | 55.7 |
| P | 18.2 | 57.0 |
| Q | 18.6 | 58.3 |
| R | 19.0 | 59.5 |
| S | 19.4 | 60.8 |
| T | 19.8 | 62.1 |
| U | 20.2 | 63.4 |
| V | 20.6 | 64.6 |
| W | 21.0 | 65.9 |
| X | 21.4 | 67.2 |
European Ring Sizes
| EU Size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| 44 | 14.1 | 44.2 |
| 45 | 14.5 | 45.5 |
| 46 | 14.9 | 46.8 |
| 48 | 15.3 | 48.0 |
| 49 | 15.7 | 49.3 |
| 50 | 16.1 | 50.6 |
| 52 | 16.5 | 51.9 |
| 53 | 16.9 | 53.1 |
| 54 | 17.3 | 54.4 |
| 56 | 17.7 | 55.7 |
| 57 | 18.2 | 57.0 |
| 58 | 18.6 | 58.3 |
| 60 | 19.0 | 59.5 |
| 61 | 19.4 | 60.8 |
| 62 | 19.8 | 62.1 |
| 63 | 20.2 | 63.4 |
| 65 | 20.6 | 64.6 |
| 66 | 21.0 | 65.9 |
| 67 | 21.4 | 67.2 |
Japanese Ring Sizes
| JP Size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| 4 | 14.5 | 45.5 |
| 5 | 14.9 | 46.8 |
| 6 | 15.3 | 48.0 |
| 7 | 15.7 | 49.3 |
| 8 | 16.1 | 50.6 |
| 9 | 16.5 | 51.9 |
| 10 | 16.9 | 53.1 |
| 11 | 17.3 | 54.4 |
| 12 | 17.7 | 55.7 |
| 13 | 18.2 | 57.0 |
| 14 | 18.6 | 58.3 |
| 15 | 19.0 | 59.5 |
| 16 | 19.4 | 60.8 |
| 17 | 19.8 | 62.1 |
| 18 | 20.2 | 63.4 |
| 19 | 20.6 | 64.6 |
| 20 | 21.0 | 65.9 |
| 21 | 21.4 | 67.2 |
Find Your Ring Size
Measure Your Finger
- Use a flexible measuring tape or length of string.
- Wrap it around the finger you'll wear your ring on. If you're creating a ring stack, consider where on your finger the ring will sit. If using string, mark the point on the string where the ends meet with a pen.
- Lay the string on a flat surface and use a ruler to measure the length (in inches or millimeters) up to the mark. Compare your measurement to the size chart to determine your ring size. If you are between sizes, opt for the larger size.
Measure an Existing Ring
- Choose a ring that already fits your finger well.
- Measure the interior diameter of the ring in millimeters (mm).
- Use the measurement chart to match the size of your ring to the closest size in mm. The interior of the ring should align with the outer edge of the circle.
Luther's At Your Service
There's no question too small or request too large for Luther's Diamonds client advisors. From choosing an engagement ring or gift to providing in-store or virtual appointments, we're always at your service.
Before you choose
Questions, answered.
Still wondering about something? Write to our family studio and Jack will answer personally. Ask us
Is it comfortable to wear every day?
Yes. Each stone is set low and close, and every edge is hand-polished smooth, so the band sits comfortably beside your engagement ring and doesn't catch on hair or knitwear.
How do I choose my size?
Pick your size in the options above. If you're unsure, open the ring size guide on this page to measure at home. Between two sizes? Choose the larger one, so the band slips over the knuckle comfortably. Before we start making your band, we confirm the size with you, so it's right the first time.
What if my size changes later?
Because the stones run all the way around, a full eternity band can't be sized up or down the usual way. That's why we take extra care to confirm your size before we make it. If your size ever changes, write to us and our family studio will talk you through the options.
How long does it take?
Every band is made to order by hand in our family studio. Most ship in about 4 weeks, fully insured, and we keep you updated along the way.
What does the warranty cover?
Every piece comes with our lifetime craftsmanship warranty against manufacturing defects. If a stone ever comes loose, we'll send you a replacement stone.
