The men who cut their way into the Louvre this fortnight and vanished with the French crown jewels pulled off, in about seven minutes, two feats at once: they stole a fortune, and they almost certainly annihilated most of it in the taking. This is the strange, faintly consoling paradox at the centre of the great art heist, and it rewards a second look, because it teaches something the news rarely has room for, which is that value is a far stranger and more fragile thing than a price tag admits, and that it does not sit where you would reach for it.
Consider what the thieves actually hold. On the wall of the museum, insured and catalogued and photographed for two centuries, the jewels were worth a sum too large to say aloud. In a bag, in a car, on the run, they are worth a sliver of it, and the sliver shrinks by the day. The reason is that almost none of their worth was ever in the gold or the stones. It was in their identity, their provenance, the unbroken and documented chain of history that made these particular gems the crown jewels of France rather than a quantity of carats. And that identity is the one thing a thief cannot carry off, because it does not live in the object; it lives in the world's agreement about the object, in the archives and the records and the shared knowledge of what these stones are and whose heads they sat on. Lift the jewels out of that web of recognition and you have not stolen their value. You have cut it away, and what stays in your hands is raw material, worth the melt price of the metal and the furtive price of anonymous stones, a humiliating fraction of what hung on the wall an hour before.
From there the thief's problem only deepens, and it is a genuinely funny one if the jewels are not yours. The stones are too famous to sell whole, since any buyer would be buying a warrant for his own arrest; so they must be broken up, recut, laundered into anonymity, and the moment that happens the provenance that was the whole of their worth is gone for good, converting the loot from a national treasure into a modest pile of second-hand gems. This is why the roll of history's great heists is mostly a roll of self-defeating ones: the masterpieces that were never sold because they could not be, that rotted in an attic or were burned by a panicking thief or surfaced decades later worth a fraction of the ransom once demanded. The value, it turns out, was never portable. It was bolted to the wall by something no crowbar reaches.
And the lesson runs well past jewels, which is why it is worth the ink. The most valuable things in the world are valuable by collective agreement, and collective agreement is exactly the thing that cannot be seized. A brand is a promise the public has learned to trust, and a counterfeit of it is worthless the instant it is known to be one. A reputation is an asset you can destroy but never steal. Money itself is only paper and pixels that work because everyone consents to pretend they are worth something, which is why a forged note is not wealth but a crime with no proceeds. In every case the worth lives not in the material but in the recognition, in the web of shared belief that the thief, the forger, and the counterfeiter can vandalise but never carry home. They can take the thing. They cannot take the agreement that made the thing worth taking, and without the agreement the thing is just stuff.
So somewhere this fortnight, in a lockup or a basement, there are men discovering the oldest truth of their trade, which is that the hard part of a heist is never the taking. It is keeping what made the object worth the risk, and that part was left behind in the museum, in the catalogues and the two centuries of provenance, the moment the glass broke. They ran off with the most famous jewels in the world and will learn, if they have not already, that the most famous jewels in the world are, for precisely that reason, the least sellable, worth everything on the wall and almost nothing in the hand. The Louvre lost a treasure. The thieves stole a pile of very traceable rocks. It is the rare crime that punishes itself, and there is a certain justice in a theft that leaves its own loot worthless, provided you did not much like the crown jewels of France.