Gold is the only metal that doesn't rust, even if it's buried in the ground for thousands of years.
This is not true.
'Most metals oxidize under the right conditions. Gold, platinum and palladium do not oxidize at room temperature, which is the reason they are used in jewelry and electronics. Stainless steel, titanium, tantalum and niobium are highly resistant to oxidation.
Rust is iron oxide. The forms Fe[SUB]2[/SUB]O[SUB]3[/SUB], Fe[SUB]3[/SUB]O[SUB]4[/SUB], and FeO are the most common."