Gold has fascinated humanity for millennia. Its colour that never tarnishes, its satisfying weight, its absolute resistance to corrosion — these qualities have made it the universal symbol of wealth and permanence. But the properties of gold extend far beyond aesthetics.
A Colour That Never Changes
Gold is one of the few metals that does not oxidise at room temperature. Where iron rusts, copper turns green and silver blackens, gold retains its lustre eternally. An 18-carat gold piece of jewellery worn daily for decades presents the same appearance as on the first day — with minimal care.
Malleability: An Absolute Record
Gold is the most malleable metal in existence. One ounce of gold (28 grams) can be beaten into a sheet covering 100 square feet (approximately 9 m²). This property allowed ancient civilisations to cover entire temples with sheets of gold of extraordinary fineness.
Ductility: 80-Kilometre Wires
Gold is also the most ductile metal. That same ounce of gold can be drawn into a continuous wire 50 miles (approximately 80 km) long. This exceptional ductility is exploited in the electronics industry, where gold is used for precision connections and wiring.
Electrical and Thermal Conductivity
Gold is an excellent electrical and thermal conductor — less so than copper or silver, but with a decisive advantage: it does not oxidise. In high-precision electronics, gold connections guarantee long-term reliability that other metals cannot offer.
Density: The Weight of Prestige
With a density of 19.3 g/cm³, gold is one of the densest metals. This is what gives it that satisfying weight on the wrist or finger — a physical sensation of preciousness that lighter metals cannot replicate.
Chemical Resistance
Gold is resistant to almost all acids and most chemical reactions. Only aqua regia — a mixture of nitric and hydrochloric acid — can dissolve it. This chemical inertia explains why gold jewellery buried for millennia emerges intact from archaeological excavations.