How Rings Are Resized, and Which Rings Can't Be
Rings get resized by cutting, stretching or adding metal. How each method works, how far a ring can safely go, and the designs that cannot be resized at all.
Most rings can be resized, which is good news if a surprise proposal ring is a little loose. But resizing is real metalwork, and some designs cannot be changed at all. Here is how jewellers do it, how far a ring can go and which rings need a different solution.
Making a ring smaller
The jeweller cuts a small section out of the back of the band, closes the gap, solders the join and polishes it until it disappears. Done well, the join is invisible.
Making a ring bigger
For a small increase, a band can sometimes be stretched on a mandrel. For anything more, the jeweller cuts the shank and solders in a new piece of matching metal, then reshapes and polishes it.
How many sizes is safe?
Most rings can safely go up or down about two sizes. Larger changes can distort the shape, put stress on settings or thin the band, and sometimes it is better to remake the ring. Rings set with stones around much of the band need the most care, because the stones and their settings must stay secure.
Rings that can't be resized
- Full eternity rings: diamonds go all the way round, so there is no plain metal to cut or add.
- Tension settings: the stone is held by the band's tension; changing the size changes the grip.
- Some patterned or two-tone bands: the pattern or the join between metals cannot be matched.
Alternatives to resizing
For a ring that is only slightly loose, a jeweller can fit small beads or a "sizing bar" inside the band, which keeps the ring upright without cutting it. Silicone ring guards are a temporary at-home fix.
Different metals, different jobs
| Metal | Resizing |
|---|---|
| Yellow and rose gold | Straightforward; solder is matched to the colour so the join disappears |
| White gold | Straightforward, then replated with rhodium for an even finish |
| Sterling silver | Easy, but the softer metal needs careful reshaping |
| Platinum | Possible, with specialist equipment and higher temperatures |
| Tungsten and titanium | Usually cannot be resized; the ring must be replaced |
Engravings and hallmarks
Resizing happens at the bottom of the band, which is often where an engraving ends or a hallmark sits. A good jeweller plans the cut around them, but a large change can shorten an engraving or remove part of a stamp. If an inscription matters to you, mention it before the work starts, or engrave after resizing.
Get the size right first time
The best resize is the one you never need. Measure at the end of the day, when fingers are at their largest, and not when you are cold. If your knuckle is much larger than the base of your finger, choose a size that passes over the knuckle. Wide bands, from about 6 mm, fit more snugly, so many people go up a quarter or half size. Our ring size guide has the full method.
Solitaires: easy to resize
Does resizing damage a ring?
Done properly, no. Repeated or very large resizing can weaken the band, so it is best to resize once, accurately.
Can an eternity ring be resized?
Full eternity rings usually cannot; half eternity rings often can, depending on the design.
How long does resizing take?
Typically a few days at the workshop, plus delivery if you send it away.
Can tungsten or titanium rings be resized?
Usually not. These metals are too hard to cut and solder like gold, so the ring is normally exchanged for a new size.
Will resizing remove my hallmark or engraving?
Usually not, because jewellers cut around them, but a large change can affect marks at the bottom of the band. Mention them beforehand.
