Origins

Before gold ever shone in a human hand, it was born in the stars. Every particle of gold you see today took shape billions of years ago, in one of the most violent events in the cosmos.

Born of cosmic catastrophe

Gold is not made on Earth. It is one of the heaviest elements in nature, and making it takes energy found only in vast cosmic events. Scientists believe that much of the universe's gold was created when neutron stars collided — objects so dense that a teaspoon of their matter weighs millions of tonnes.

When two neutron stars that have circled each other for millions of years finally meet, the result is an explosion called a kilonova. In that moment, neutron-rich matter is flung into space at a dizzying speed, and through a process called rapid neutron capture, heavy elements — gold among them — form in a fraction of a second.

This is no longer just a theory. In 2017, astronomers watched such a collision closely for the first time: its gravitational wave shook detectors on Earth, and the signature of heavy metals showed in the spectrum of its light. That night, a guess decades old was seen with our own eyes.

Every gold ring is a keepsake of two colliding stars.

A journey of billions of years

Once born, this gold scattered through vast clouds of interstellar gas and dust. Billions of years later, those same clouds collapsed to form stars, planets and, in the end, the Earth. The gold in our hands today was once part of the dust from which the solar system was born.

While the young Earth was still molten, most of its heavy gold sank toward the planet's core. The gold we find today in the crust and in mines probably reached the surface after the Earth had cooled, carried by showers of meteorites. That is why gold is so rare: most of it lies buried in the unreachable depths of the planet's heart.

Why this metal?

Of all the elements, gold has qualities that make it unique. It does not rust or decay; it lasts for thousands of years without tarnishing. It is so malleable that a single gram can be beaten into a sheet a square metre wide. And its warm yellow glow is rare in nature. It was this combination of permanence, scarcity and beauty that made gold special in human eyes, even before it had any economic value.

And this is where the story we follow in the next hall begins: how did this metal, born of the stars, become the measure of value?