Élektrum
Electrum is a natural alloy of gold and silver, which may also contain traces of other metals such as copper. The gold content of electrum can typically range between 20% and 80%, which affects the colour of the alloy from a lighter yellow to more golden tones.
This material was already valued in antiquity, especially in the Middle East region and in ancient Anatolia (today's Turkey), where electrum was commonly used to make coins, jewellery and various ritual objects. The first known coins struck from electrum date from the region of Lydia in the 7th century BC, indicating the high value and importance of this material in trade and economics.
Due to its natural beauty and durability, electrum was sought after for its aesthetic and practical properties. In the ancient world, electrum was considered a symbol of wealth and power.