You don't, because it's not.
You can alloy it with other, harder metals to make a more durable alloy, but then it's not still pure gold.
gold necklace
Titanium is used to make gold harder. They often use gold mixed with titanium in jewelry to make it harder.
There is nothing super special about them. They are just hard to obtain.
gold necklace
gold necklace
Titanium
Yes although it is very hard to care for.
Carbon fiber is really strong. It isn't super easy to fabricate, but it isn't super hard to make it, either.
They make special mounting kits that make it super easy to install projectors
It is Austalias biggest gold mine and employes a lot of people to work for them. It is in Australia and many people visit the site each year. The workers work hard on mining the gold.
Hard super glue is no longer usable.
He has a power ring that can make anything out of his imagination if he focuses hard.