sentence: Gold is also a very dense metal, making gold coins hard to fake.
sentences_before: Gold has been used since the invention of coins. It is used because gold is an easy metal to use, and because gold is very valuable. So, a person could have a small quantity of gold coins but still buy many things.
sentences_after: Gold is good for storing coins because it does not rust.
concept_name: gold
headings: Gold coin
categories: Currency Gold