Karat (noun)

A karat is a unit of measurement used to express the fineness of gold alloys, with 24 karats being pure gold and lower karat numbers indicating a higher proportion of other metals.

Origin:

The word karat is derived from the italian word "carato" meaning "a carat" which is a unit of weight used for precious stones.

Examples:

1. A 14 karat gold ring contains 14 parts of gold and 10 parts of other metals.
2. The gold chain was 18 karats.
3. 24 karat gold is considered pure gold.
4. The karat is a unit of measurement used to express the fineness of gold alloys.
5. The karat is used to indicate the percentage of gold in a piece of jewelry.