Franco Gold Chain

Franco Chains by Width, Finish & Construction

A franco chain is built from small V-shaped links hooked into one another so tightly that they form a continuous square tube, with a row of chevrons running down each of its four faces. It is a descendant of the curb family, made by locking two curb-type runs together at right angles, and the result behaves quite unlike a flat chain: it is square in section, it bends equally in any direction, and it has no plane along which it can be folded and locked. This page explains how the link is formed, why the section is square, how the chain takes light, how it carries a pendant and how it is shortened. Width, finish and construction are on each listing.

Each link of a franco is a short length of wire bent into a V and closed at the top. The point of one V hooks through the opening of the next, and the links are set so that they alternate direction, one lying left and the next lying right. What makes a franco is a second run of the same links, interlocked with the first at ninety degrees, so that every link is held by a neighbour above and below as well as fore and aft. Seen end-on, the finished chain is a small square with a link crossing each face.

A flat chain has a wide face and a thin edge, and it will fold across its face without complaint but not across its edge. A franco has no wide face and no thin edge. Its four sides are equal, so a bend in any direction meets the same resistance and the same give, and there is no orientation in which a fold can trap one link over another. That is why a franco dropped in a pocket comes out straight, and why it can be coiled loosely for storage without concern. The links can still be damaged by a hard crush, but the chain does not lock itself.

Because the links are hooked rather than looped, and because each one is braced by four neighbours, a franco is dense and supple at the same time. In the hand it runs through the fingers like a cord. Around the neck it takes the curve of the collarbone and the climb up to the clasp without turning over, since it has no flat side to prefer, and the same face of the chain is presented to the viewer from every angle. It also does not swing much, because its weight is concentrated close to the centre line rather than spread across a broad face.

The four faces of a franco are what give it its light. On a plain franco each chevron is polished, and as the chain moves two adjacent faces are always tilted towards the viewer, so the chain glows along two edges at once rather than flashing from a single surface. A diamond-cut franco has a flat facet sliced across the outer surface of each link on each face, which sharpens the glow into a run of small bright points that travel down the chain with every movement. Both are assembled identically; the difference is what has been done to the surface after assembly.

The Franco chain's V-shaped links are woven together in a four-sided pattern that distributes tension across all four sides of each link simultaneously. Standard oval-link chains have a single hinge point per link where stress concentrates — the Franco eliminates that weakness. At heavier widths where other chains have breaking points, the Franco holds.

Why the V-Link Structure Matters

A Cuban or Figaro chain carries the load through one contact point per link. The Franco's four-sided construction spreads that same load across four surfaces — making it structurally the most break-resistant chain style for daily wear at any width above 4mm.

How Franco Chains Wear Over Time

The squared profile means minor surface scratches diffuse into the chain's texture rather than marking a flat surface clearly. A well-worn Franco retains its appearance longer than flat chain styles under the same daily wear conditions.

How a Franco Is Built and Why It Does Not Kink

The franco is one of the few chain constructions that is square in section, and nearly everything about its behaviour follows from that. This guide covers how the V-links are hooked together on four sides, why the square section refuses to lock in a fold, how the chain bends and turns, how its faces take light plain and faceted, how it carries a pendant, and how a jeweller shortens it without disturbing the interlock.

V-shaped links hooked together on four faces

The unit of a franco is a small V of wire, and the chain is two runs of those units woven together. In the first run, each V hooks through the one before it, alternating left and right so that the run lies flat with a zigzag along it. The second run is identical but turned through a right angle and threaded through the first, so that its Vs pass through the openings the first run leaves at top and bottom. Every link is now held by four others. The runs cannot separate, and the finished chain is a rigid-looking square tube that in fact flexes at every joint.

Square in section, and why a fold does not lock

A chain kinks when it is folded so that one link is forced over the back of another and held there. That requires a flat chain, in which the links have a broad face to ride over and a narrow edge to catch against. A franco has neither. Its section is square, its links cross all four faces symmetrically, and a fold in any direction simply opens the joints on the outside of the bend and closes them on the inside. When the fold is released the joints resettle. A hard blow can crush its links, but a fold cannot lock it.

Bending equally in every direction

Because each link is held on four sides, a franco flexes at each joint by the same small amount whichever way it is bent, so it curves as readily one way as another. Around the neck this has two consequences. The chain never has to turn over, since it has no face that wants to be on top, and so it shows the same surface at the front, the sides and the back. And it takes the awkward curve at the shoulder, where a chain lifts off the chest and turns up the neck, without a visible twist, because there is nothing to twist.

Four faces, plain or faceted, and how light travels down them

A flat chain reflects from one face at a time. A franco, being square, presents two of its four faces to the viewer at any moment, and the row of chevrons on each face acts as a ladder of small reflecting surfaces. On a plain franco those surfaces are polished and slightly rounded, and the chain returns a soft double highlight, one along each visible edge, that slides along as the wearer moves. On a diamond-cut franco a flat facet is cut across the outer surface of every link, and the highlight breaks up into a chain of distinct sparks that run down the two faces.

Carrying a pendant on a square chain

A franco is often chosen as a pendant chain. A bail passes over a square section easily provided its opening clears the width of the chain across the diagonal, which is a little more than the stated width. Once on, the bail rests on a corner or a face, and because the chain does not roll, the pendant is not turned by it and hangs square. The interlocked links share the pendant's pull among several joints, so the chain is not strained at one point, and the chevrons beneath the bail take the wear rather than a single link. A tight bail scores those chevrons.

Shortening at a link without opening the weave

The links of a franco are hooked, not soldered, but they cannot be unhooked one at a time because each is held by four others. A jeweller instead cuts through the chain square across at the required point, which frees the last complete set of links on either side of the cut, and then removes any loose partial links until both ends present a clean square. The two ends are fitted into new end caps, or the original caps are reused, and the caps are soldered and the clasp reattached. The amount removed is rounded to whole links, so the shortening is close rather than exact.

The Franco chain's V-shaped link construction was developed specifically to handle heavier widths without the structural weakness that affects other chain patterns. At heavier widths, this creates a predictable breaking point. The Franco's four-sided construction distributes tension across all four sides of each link simultaneously, making it structurally resistant to the lateral forces that break other chains.

This is why the Franco became the preferred construction for chains in the 6mm+ range. At those widths, a Cuban or Figaro chain has enough weight that the hinge points are under constant stress. which spreads the load across more contact surfaces than a single-plane link

The Franco's squared profile also wears differently over time. Because it doesn't have flat surfaces the way a Cuban or herringbone does, minor surface scratches diffuse into the chain's texture and become less visible.

Understanding the Franco

What is a franco chain?

A chain built from small V-shaped links hooked together on four sides, so that the finished chain is square in section and carries a row of chevrons down each face. It belongs to the curb family, being made by locking two curb-type runs together at right angles.

Its distinguishing habits are a square section, a flexibility that is the same in every direction, and an inability to lock itself into a kink, since it has no flat face to fold across. In the hand it runs like a dense cord.

It is worn on its own, where its four faces give a double highlight, and as a pendant chain, where its square section keeps a pendant hanging straight. The listing states width, finish and construction.

How are the links of a franco chain joined?

By hooking. Each link is a length of wire bent into a V and closed at the top, and the point of each V passes through the opening of the one before it. A single run of such links makes a flat zigzag chain.

A franco takes two of those runs and weaves them together at a right angle, so that the Vs of the second run pass through the openings that the first run leaves at top and bottom. Every link ends up held by four neighbours, two in its own run and two in the other.

Nothing is soldered between links. The interlock is what holds the chain together, and it is tight enough that the links cannot rotate freely, which is why a franco looks rigid in a photograph and flexes freely on the neck.

Why is a franco chain square rather than flat?

Because it is built from two flat chains crossed at ninety degrees. Each run of V-links on its own would lie flat, with a wide face and a thin edge. Weaving a second run through the first at a right angle gives the chain a second wide face across its former edge.

The result has four equal faces, each carrying a row of chevrons, and a section that is a small square. There is no wide side and no narrow side, so the chain has no preferred orientation and shows the same surface from every angle.

The square section is the source of nearly everything else the style does: the double highlight, the even flexibility, the refusal to kink, and the way a pendant hangs square on it.

Does a franco chain kink?

Not in the way a flat chain does. A kink is a fold in which one link is forced over the back of another and held there by the pull of the chain, and it needs a flat chain with a broad face to ride over and a thin edge to catch on.

A franco has four equal faces and no edge. A fold in any direction opens the joints on the outside of the bend and closes them on the inside, and when the fold is released the joints settle back. The chain comes out of a pocket straight.

What a franco can suffer is a crush, where a hard blow bends individual links out of the square. That shows as a flat or twisted patch on one face, and it is a repair rather than something that can be shaken out.

Why is a franco chain so flexible for a chain of its weight?

Because it flexes at every joint and in every direction. A franco of ordinary width contains a great many small links, and each one moves a little against its four neighbours whenever the chain bends. The sum of all those small movements is a chain that pours through the fingers like a cord.

A flat chain of the same weight flexes only across its face, so half of the movements a wearer makes are resisted rather than absorbed, and the chain feels stiffer than its weight suggests. A franco resists nothing.

The interlock also spreads the weight evenly along the chain, so no part of it feels heavier than another. On the neck it settles into the curve of the collarbone and stays there without pulling to one side.

Does a franco chain turn over while it is worn?

No, and the reason is that it has nothing to turn over to. A flat chain lies face-out at the front and has to roll edge-on at the sides of the neck, so it turns twice on its way round. A franco is the same on all four faces.

Wherever the chain bends, it simply bends, and the surface presented to the viewer is the same before and after. The chevrons run continuously from the clasp round to the front and back again with no visible twist at the shoulders.

This also means a pendant on a franco is not turned by the chain. The bail rests on a face or a corner and stays there, and the pendant hangs as it was placed.

What is the difference between a diamond-cut franco and a plain one?

The surface, not the construction. Both are woven from the same V-links in the same way. A plain franco is polished after assembly, so each chevron on each face is a small rounded bright surface, and the chain gives a soft double highlight along the two faces that are turned to the light.

A diamond-cut franco is passed under a cutter after assembly, which slices a flat facet across the outer surface of every link on each face. The rounded highlights become sharp points, and the chain sparkles as those points catch the light one after another.

The facets sit on the outermost surfaces, which are also the surfaces that meet skin and clothing, so with years of wear they soften and the sparkle quietens. A plain franco changes less with wear because it had no edges to lose.

Will a pendant hang straight on a franco chain?

It will, and more reliably than on most chains, because the chain does not roll. A bail on a flat chain is turned whenever the chain turns edge-on; a bail on a franco rests on a face or a corner of the square and stays as it was placed.

The bail must clear the chain across its diagonal, which is a little more than the width stated on the listing. Once over, it slides freely along the chevrons, and the pendant finds the lowest point of the curve and sits square there.

The interlocked links share the pendant's pull among several joints rather than loading one, so a franco carries a pendant of some weight without strain. The chevrons beneath the bail take the wear over time, particularly if the bail is a close fit.

How does a jeweller shorten a franco chain?

By cutting, not by unhooking. Each link in a franco is held by four others, so no single link can be removed without freeing the ones around it. The jeweller cuts square across the chain at the required point, which releases the last complete set of links on each side of the cut.

Any partial links left loose at the cut are removed until both ends present a clean square face that will enter an end cap. The caps are then soldered on, or the original caps refitted, and the clasp attached.

Because the cut has to land on whole links, the length removed is rounded to the nearest complete set rather than to an exact measurement. The chain is normally shortened at the clasp end only, so the pattern along the rest of it is untouched.

What widths are franco chains made in?

From fine chains of around a millimetre and a half, which are almost always bought as pendant chains and read as a bright square thread, through the two and a half to four millimetre range that is worn on its own, up to heavy chains of six millimetres and more.

Wide francos are dense, because the square section packs a great deal of metal into the chain's length, and they are among the heaviest chains for their width. Hollow construction is sometimes used at the wider sizes to keep the weight wearable, and the listing states which.

The width on a listing is measured across one face of the square. Across the diagonal, which is the dimension a bail has to clear, the chain is a little wider than the stated figure.