Wedding Bands
Spacer Bands: The Piece That Solves Three Problems
A plain narrow band between two rings stops abrasion, closes a gap and steadies a spinning ring โ and hardly anyone is offered one.
Written by the Mapple Gems workshop, Surat ยท Updated 1 October 2026
Short answer
A spacer is a plain band, usually 1โ2ย mm wide, worn between two rings. It does three things at once: it separates a stone-set band from a plain one, which otherwise abrade each other; it fills the gap where a straight band will not sit flush against a raised setting; and it steadies a ring that spins. Ask for it in the same fineness as the rings it sits between, and at 1.8ย mm thickness like anything else worn daily.
Spacers are the least glamorous thing we make and one of the most useful. They are also almost never suggested, because they solve problems people have not been told they are about to have.
A stone-set band worn directly against a plain one will cut a groove into the plain band, and the plain band always loses. The hardness gap does all the work: set stones sit at Mohs 9 or above โ 9.25 for moissanite, 10 for diamond โ while gold sits at around 2.8 and platinum a little above. Two rings on the same finger rub against each other constantly, with every grip and gesture, thousands of times a day for decades. The stones are unaffected. The plain band develops a visible flattened channel along the edge that faces them, and by year ten it is thinner there than anywhere else โ which is also where a shank fails. A 1.5ย mm plain spacer between them takes that wear instead, and it is the cheapest ring in the stack: if it eventually needs replacing, it costs a fraction of reshanking a wedding band. The same logic applies to platinum against gold, where the harder metal displaces the softer one one-directionally. Nobody mentions this at the point of sale, because at the point of sale the two rings are new and touching harmlessly.
The three jobs
| Problem | How a spacer solves it |
|---|---|
| Stone-set against plain | Takes the abrasion instead of the good band |
| Gap under a raised setting | Fills the space a straight band cannot |
| A ring that spins | Two rings stabilise each other |
| Mixed metals touching | Separates platinum from gold |
| A stack that reads unbalanced | Adds width without adding decoration |
The gap problem specifically
This is the one people usually arrive with. A three-stone, pear, oval or side-stone engagement ring extends along the finger, so a straight wedding band pressed against it leaves visible daylight underneath the setting.
There are three answers, and a spacer is the least discussed. A contour band is shaped to fit โ the best solution if it is designed as part of the build, and more expensive commissioned later. A spacer fills the gap with a narrow plain band and is far cheaper. Or you live with the gap, which many people do quite happily.
Test which you need before anything is made: hold a straight edge against the side of the ring as worn, or against the CAD side elevation. Daylight means a decision.
What to specify
- Width 1โ2ย mm. Narrow enough to read as a detail rather than a third ring; wide enough to do the job.
- Thickness 1.8ย mm, like any daily-wear band. A flimsy spacer deforms and defeats the point.
- Matching fineness number โ 585 or 750, not โyellow goldโ. 14K beside 18K in the same colour visibly clashes.
- Court profile with softened edges, since it sits between two rings and edges are what dig in.
- Plain. A stone-set spacer solves nothing โ the whole function is to be the softer, sacrificial, replaceable piece.
Where it changes the stack arithmetic
A spacer adds width, and stacked width adds up faster than people expect: a 2ย mm shank, a 1.5ย mm spacer and a 3ย mm band is 6.5ย mm of metal on one finger before any anniversary ring arrives.
Two consequences. Size the stack as a group if they will always be worn together, since three rings fit differently from one. And keep the outer position free โ additions almost always go on the outside, and a spacer is easier to add or remove than to insert into a soldered stack later.
Which raises the other option: soldering. It stops rubbing and spinning entirely, but it permanently ends wearing the rings separately and complicates every future resize. Worth doing only when the stack is genuinely final.
A note on guards and enhancers
Worth distinguishing, since the words get mixed. A spacer is a plain band that sits between rings. A ring guard is a small fitting that tightens a loose ring โ a different problem, better solved with sizing beads or a euro shank. A ring enhancer or wrap is a shaped piece designed to frame an engagement ring decoratively.
Enhancers are lovely and they are not sacrificial: if a stone-set enhancer sits against a plain band, you are back to the original abrasion problem with a more expensive piece in the firing line. If you want both, the order is: enhancer, spacer, plain band.
Keep reading
Frequently asked questions
What is a spacer band for?
A plain narrow band worn between two rings. It separates a stone-set band from a plain one so they do not abrade each other, fills the gap where a straight band will not sit flush against a raised setting, and steadies a ring that spins.
Do stone-set bands really damage plain ones?
Yes. Set stones sit at Mohs 9 or above while gold is around 2.8, and two rings rub constantly for decades โ so the plain band develops a visible flattened channel along the facing edge, which is also where a shank fails. A plain spacer takes that wear instead, and is far cheaper to replace.
Spacer or contour band for a gap?
A contour band is the better fit if designed as part of the original build; commissioned later it costs more. A spacer fills the gap far more cheaply. Test which you need with a straight edge against the side of the ring as worn โ visible daylight means a decision.
Should a spacer have stones in it?
No โ the whole function is to be the softer, sacrificial, replaceable piece. A stone-set spacer recreates the abrasion problem it was meant to solve. Keep it plain, 1โ2ย mm wide, 1.8ย mm thick, in the same fineness number as the rings around it.
Add a plain spacer to the order.
It is the cheapest ring in any stack and the one protecting the expensive ones.
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