A Gold Ring which is 50% pure. Its purity can be alternatively shown as _

Q. A Gold Ring which is 50% pure. Its purity can be alternatively shown as __:
Answer: 12 Karat
Notes: The carat is the common unit used to describe the mass of a gem. A 1-carat diamond, for example, has a mass of 0.20 g. The karat is the common unit used to describe the purity of a precious metal, such as gold. A 24-karat gold ring is as pure as can be. A gold ring that is 50 % pure is 12 karat.