Gold is the noble metals and has two effects is important.
First is shiny and corrosion resistance. Suitable for jewelry, coins, and aimed decor.
There is no need polishing is also beautiful.
Secondly, the effects of the gold benefit industry and science.
In the past several years, the ageing used in industry.
Active implementation by using it to prevent the heat in the series the astronaut.
So it"s not as pretty as useful as well.