Is the gold foil gold?

Gold foil is a thin sheet hammered from gold. Because pure gold is not easy to extend, most gold foils are added with silver and copper. The gold foil made by traditional technology takes gold bars with 99.99% gold content as the main raw material, and after more than ten special processes such as chemical cleaning, hammering and foil cutting, it is golden in color, bright and soft, as light as a feather, as thin as a cicada's wing and less than 0. 12 micron in thickness.

Extended data:

Gold is a simple form of chemical element gold, which is a soft, golden yellow and corrosion-resistant precious metal. Gold is a rarer, more precious and more valuable metal. Generally speaking, the gold in the world is in ounces. In ancient China, gold was measured in ounces, which was a very important metal. It is not only a special currency for reserve and investment, but also an important material for jewelry industry, electronics industry, modern communication and aerospace industry.

Source: Gold Foil Baidu Encyclopedia Gold Baidu Encyclopedia