Introducing a list. The colon is used to introduce a list of items. The bookstore specializes in three subjects: art, architecture, and graphic design. Do not, however, use a colon when the listed items are incorporated into the flow of the sentence.
Definition of medal for Students. : a piece of metal often in the form of a coin with design and words in honor of a special event, a person, or an achievement.
No medal is pure anything. The medals are a combination of gold, silver and copper to make it a harder alloy. Just like you would find in the coins we use every day in life. If you buy a gold bullion ounce today you will be paying close to $1,000 because of the market. Those coins may have an ounce of gold but it is not pure. The medals are no different; they do not have an ounce of gold it is normally around a quarter of an once