Why are humans seemingly hardwired to worship gold? It is unique amongst metals: it is malleable, it doesn’t tarnish, and it shines like nothing else. Over time it has come to symbolise wealth and status. It can represent goodness and fidelity but also greed and lust. Financial educator, author and broadcaster Alvin Hall explores why we are so obsessed with this particular metal, and what it represents around the world - in terms of wealth and symbolism - both historically and now.