Iron, aluminum, gold also belong to the metal,
Why is gold so expensive,
But other metals would then cheaper?
Indeed, all the metal is no essential difference,
Value is artificially given to them.
If you are going to be starved to death,
Gold and bread, which one is more valuable?
Supply and demand.
Gold is in far less supply than say Al or Fe so it's price is accordingly higher.
Al at one point when it was first discovered cost more than gold.
Prior to commercial electrical generation in the early 1880s, and the Hall-Héroult process in the mid 1880s, aluminium was exceedingly difficult to extract from its various ores. This made pure aluminium more valuable than gold.[50] Bars of aluminium were exhibited at the Exposition Universelle of 1855.[51] Napoleon III of France is reputed to have given a banquet where the most honoured guests were given aluminium utensils, while the others made do with gold.[52][53]
http://en.wikipedia.org/wiki/Aluminium
Gold is an internationally recognised store of value. Let's assume we don't know why, but try and think of a substitute. It needs to be fairly compact: most other possibilities would not fit the bill. Look at the price of iron and see how much space you would need for a reasonable investment.
Because Gold is a rare metal just like diamond.
Gold is considered a precious metal, its not something that can be produced with other compounds.
As the gold ore is alot more rare than iron ore.
More people are buying gold than selling it
Go wear a chunk of aluminum around your neck and see how nice it is then.
One thing I do not understand,
Iron, aluminum, gold also belong to the metal,
Why is gold so expensive,
But other metals would then cheaper?