If there is one thing in the world that signifies luxury, it’s gold. Gold in all its forms is the world’s most ubiquitous and historic symbol of wealth. For thousands of years, it has been moulded into coins, crowns, armour – and, of course, jewellery. In its natural form, gold is found deep in the layers of the earth. It is transported by water, molten lava, volcanic eruptions and earthquakes, to the earth’s crust where it is mined. Geologists have found gold inside rocks as old 4.5 billion years ago.