No-one has ever been able to turn lead into gold, as medieval alchemists promised, but two Australian billionaires have found ...

metals do not contain iron and are not magnetic ... cable Brass Non-ferrous metal that is gold coloured and darkens when oxidised with age An alloy of copper and zinc, can be cast and machined ...

"The connection between gold and iron is important ... Montero-Ruiz and his team used mass spectrometry to measure traces of iron-nickel alloy in the artefacts that were comparable to that ...