The purity of gold in a compound is measured in [[Carat|Karats]], with 24 karats being pure gold. 18 karat gold is three quarters gold, one quarter other [[elements]], and so forth. Gold is usually in alloys because it is soft and pliable. | The purity of gold in a compound is measured in [[Carat|Karats]], with 24 karats being pure gold. 18 karat gold is three quarters gold, one quarter other [[elements]], and so forth. Gold is usually in alloys because it is soft and pliable. |