Short answer: a full eternity band has stones all the way around, so it looks the same from every angle, but it leaves no plain metal for a jeweler to cut, which makes it very hard to resize, and some owners find the stones on the palm side rub their other fingers. A half or three-quarter band keeps plain metal underneath. Many people find that more comfortable for everyday wear, and it generally gives a jeweler more room if your size changes later, but a loose half band can turn so the stones end up on the palm side. Whichever you prefer, settle the size first, because with an eternity band the size limits your choices more than the style does.
Full, three-quarter and half eternity: what the words mean
These terms describe how far the stones go around the band. They say nothing about carat weight.
- Full eternity: stones run all the way around, with no plain section. GIA describes eternity/anniversary rings as “those with diamonds around the entire band”.
- Three-quarter: stones cover roughly the top three quarters, leaving a plain section on the palm side.
- Half eternity (also called half-around): stones cover the top half, which is the part people see when your hand is relaxed, and the back is plain metal.
Naming varies between sellers: some call any band with a row of diamonds an “eternity” or “anniversary” band. So read the description rather than the name, and look at the photo of the underside. If a listing does not say how far the stones go, ask before you order.
Comfort in daily wear
On a full band, the stones on the palm side sit between your fingers and against anything you grip. Some owners report on jewelry forums that these stones rub the neighboring fingers or press uncomfortably when they grip things. Others say the feeling fades after a few days. At least one owner describes having a full band converted to a half one for this reason. It depends on your hands, the band’s width and the size of the stones.
Half and three-quarter bands put plain metal where your fingers close, which many people find easier to wear all day. The trade-off is movement. A commonly reported complaint is that a half band which is even slightly loose turns on the finger, so the stones drift to the palm side and the plain back shows on top. A three-quarter band tends to hide that better, because there is less plain metal to come round. In our view, a good fit matters even more for a half band than for a full one, because a loose half band shows it.
If it will sit next to an engagement ring, our guide to wedding band gaps, flush fits and contour bands explains why some pairs leave a gap, and our guide to pavé band security and care covers the wear two set rings cause when they rub together.
Sizing an eternity band
GIA’s sizing advice applies directly:
- Width changes the fit. “Rings with wide shanks usually need to be a bit larger, as they will fit more snugly.” An eternity band can feel tighter than a thin plain band in the same size, so a size taken from a thinner ring may not carry over.
- The knuckle decides. For most people the knuckle is wider than the base of the finger, and the ring has to slide over it without forcing. Once on, it should sit without spinning.
- Your fingers change during the day. “Fingers shrink in the cold and swell in the heat.” GIA also notes that a reading taken on a cool morning can differ from one taken in the afternoon.
Practical steps:
- Measure the exact finger, at the end of the day and on more than one day, in a normal room temperature.
- If you can, use a sizer or a ring of a similar width to the band you want. A thin sizer can mislead you for a wider band.
- If the band will be worn beside an engagement ring, size with both rings on, since two rings together can feel snugger than one.
- Follow the steps in our guide to measuring your ring size at home, which covers band width, knuckles and time of day.
If you are between sizes, our ring size guide says to size up, because a slightly loose ring can still be worn and one that will not pass the knuckle cannot, and to consider a further half size up for bands about 6 mm or wider. Size up by the smallest step that passes your knuckle: a ring that is too big turns or slides, and on a half band that brings the stones round underneath. If you are unsure for a specific band, ask before you order.
Can it be resized later?
In short: a full eternity band is very difficult to resize, while a half or three-quarter band, with plain metal at the back, generally gives a jeweler more room to work. GIA puts it plainly: “It also can be very difficult to resize eternity/anniversary rings (that is, those with diamonds around the entire band).” It adds that “rings with pavé and channel settings cannot be resized easily”, and that “it is easier to remove metal from a ring that’s too big than add metal to a ring that’s too small.” Our pavé band guide explains why, and what a jeweler has to cut.
The bigger question is the long term. A commonly reported worry among owners is outgrowing a full band. Finger size is not fixed: fingers swell in the heat, many people have some swelling in their fingers during pregnancy, and some owners find their size changes over the years. A plain section on the palm side keeps more options open. If a band later becomes slightly loose, a jeweler may be able to suggest a way to make it fit more snugly, depending on the design. IMPERVORA does not list resizing as a service, so any of this would be work by your own jeweler, and any alteration ends returnability (see below).
Full, three-quarter and half compared
| Full eternity | Three-quarter | Half eternity | |
|---|---|---|---|
| Stones visible from | Every angle | Top and most of the sides | The top |
| Palm-side comfort | Stones between the fingers; some owners report rubbing | Shorter plain section at the back | Plain metal at the back |
| Resizing later | Very difficult (GIA) | Some room, usually less than a half band; varies by design | Generally easier; limits vary by design |
| Turning on the finger | Looks the same either way | Plain back can show if loose | Most noticeable if loose |
| Next to an engagement ring | Two set rings rub; check both | Same | Same |
| If the size is slightly off | Hard to correct later | Plain back may show if loose | Stones may turn underneath if loose |
If it does not fit when it arrives
Try the band on briefly as soon as it arrives. Do not take it to a jeweler for sizing, beads or any other change until you have decided to keep it.
Our return and refund policy says: “Your return window opens on the day your order is delivered, as recorded by the carrier, and closes 30 calendar days later.” The return must be postmarked within that window; a request alone is not enough. To be eligible, the ring must be “Unworn, unaltered, and free of damage, scratches, or signs of wear”, in its original packaging, and “With all original tags, certificates, and documentation attached and intact”. The policy also states: “Items showing wear, resizing, engraving, repair, or alteration by any third party cannot be accepted.”
- Email Concierge@impervora.com with your order number and the reason first. Returns need a Return Merchandise Authorization (RMA) number.
- For change of mind and fit, you pay return shipping. There is no restocking fee.
- A different size is handled as a return and a separate new order.
- Custom, personalized or engraved pieces, pierced earrings, final sale items and gift cards cannot be returned.
Frequently asked questions
Anniversary, wedding or eternity band?
The three names mix two different questions: what the ring is for, and how it is set. “Wedding band” describes a role: Jewelers Mutual notes that wedding bands “are typically exchanged during the marriage ceremony”. “Anniversary band” names an occasion too, though one retailer, Blue Nile, says an anniversary ring “can be given at any time, not just anniversaries”. “Eternity” describes a design, a continuous row of stones, and Jewelers Mutual calls an eternity ring “a popular choice for a wedding or anniversary band”, so one ring can fill more than one role.
Sources disagree on what the names say about the stones. GIA, quoted above, groups “eternity/anniversary rings” together as “those with diamonds around the entire band”. Blue Nile draws the line elsewhere: “The only difference between an anniversary and an eternity band is how far the diamonds (or other stones) go around the band”, and in its usage an anniversary band “has diamonds on the front part of the band only”. Jewelers Mutual uses “eternity” for stones “set all the way around” and “half-eternity” for a ring “that only shows stones on the upper half”. Because the sources do not agree, the name alone does not tell you how far the stones go.
Our own Anniversary Bands category is described as “Anniversary and eternity bands set with diamonds all the way around or across the top”, and its listings do not state how far the stones go around, even where the title says “Eternity Ring”. As above, check the description and the photos, and if the coverage is not stated, email Concierge@impervora.com before you order. Our platinum anniversary bands are listed in ring size 7 only, so check your size against the listing as well.
Choosing with this in mind
If you want plain metal underneath, the 14K white gold half-around pavé band is 2.4 mm wide, with 16 round diamonds in a row that extends halfway around the band. If you want more coverage while keeping a plain back, the 14K white gold three-quarter micro-pavé band is 2.2 mm wide, with 28 round diamonds that extend three-quarters of the way around. Both are available to order in sizes 4 to 9, including half sizes. You can compare other widths and setting styles, including our eternity rings, in our women’s wedding bands.
IMPERVORA sells the bands linked above; we chose them as examples of half-around and three-quarter coverage. If you are deciding on a specific eternity ring and want to know how far its stones go around, its width or how it may sit beside your engagement ring, email Concierge@impervora.com before you order and we will share what information we have.
