Buying the Ring and the Band From Different Places

Plenty of couples end up here, and often for good reasons — an inherited ring, a proposal ring bought abroad, a maker who no longer trades, or simply finding a band you prefer elsewhere. It is a normal situation rather than a mistake, and it needs a little more preparation than ordering both together.

The five numbers to supply

1. Karat and metal colour. Look inside the shank for the stamp — 375, 585, 750, 925, PT950. This is the single most important one, and it is written on the ring.
2. Band width in millimetres, measured at the back of the shank with a ruler or callipers.
3. Shank thickness — how deep the metal is, not just how wide.
4. Finger size, measured properly and recently, not the number from the original purchase.
5. Photographs from directly side-on, worn, with something for scale. This is what shows the profile the band has to meet.

A workshop given those five can usually produce something that sits correctly. Given only “yellow gold, quite thin”, it cannot.

The gap problem

The second failure point, and the one that needs the side photograph.

Whether a straight band sits flush depends on what the engagement ring has near the shank — a cathedral shoulder, a low basket, a hidden halo or side stones all intrude into that space. A maker who has never seen the ring cannot know.

Run the straight-edge test yourself first: wear the ring, press a coin or card flat against the side of it parallel to your finger, and look for daylight. If you see a gap, tell the second maker before they quote you, because a contour is fitting work rather than a stock item.

And if a contour is needed, understand what you are buying: cut to measurements and photographs rather than to the physical ring, it will be close rather than perfect. Sending the ring itself gives a better result and means being without it for a few weeks.

Things that are easier than people expect

• Matching a finish. High polish, satin and brushed are all straightforward to reproduce, and finish can be adjusted afterwards if it is not right.
• Matching stone size in a diamond band. Melee comes in standard millimetre sizes, so matching a 1.5 mm pavé row is routine.
• Adjusting width slightly. A band can be made 0.2 mm narrower or wider to sit better against an existing shank — a detail worth asking about.

Things that are harder

• Matching milgrain. Bead size and spacing vary by maker, and mismatched milgrain sitting adjacent looks worse than none at all.
• Matching an unusual rose gold. Rose alloys differ noticeably between workshops.
• Matching a discontinued design. Doable as a custom piece, but it is custom work rather than a catalogue purchase.
• Soldering rings from different makers. Possible, but the join is only as good as the metal match — another reason to get the karat right.

If the original stamp is worn away

It happens on older rings, and there is a straightforward answer: a jeweller can test the metal. An acid test or an XRF reading will give the fineness in minutes, and it costs very little.

Do that before ordering rather than guessing. A wrong assumption here produces exactly the mismatch described above, and it is the most expensive kind because the new ring is not faulty — it is simply wrong.

The honest comparison

Ordering both from one maker gives a flush fit by construction, a single metal batch, and lower cost, because the fitting is part of the build rather than a separate job. That is genuinely better when it is possible.

When it is not possible — and often it is not — the five numbers above close most of the gap. What they cannot do is make a 750 band match a 585 ring. That one has to be right from the start.

Frequently asked questions