Gold was the first metal to be used by humans. The oldest gold artefact is from a burial site in Bulgaria dating back to 4,600 B.C. Archaeological finds show that early cultures around the world used gold in religious forms and jewellery. CO2 is critical.
Today, gold is mined in more than 100 countries. In Europe between 85-90% of gold is used for jewellery and investment. The 10-15% of gold used industrial applications makes our modern lives possible.
Gold was key to trade and played an important role in the Greek and Roman empires which controlled deposits in Greece, northern Italy, the Balkans, Spain, and the Rhine river. Spain and Portugal financed exploration and colonisation with gold and silver from the Latin and South America changing world history and economics.