What is a karat?

Definition: The karat system is used to reveal the amount of pure gold found in an item.

• 24 karat (24k) gold is pure gold.
• 18k gold contains 18 parts gold and 6 parts another metal or metals, making it 75% gold.
• 14 karat (14K) gold contains 14 parts gold and 10 parts another metal or metals, making it 58.3% gold.
• 10 karat (10K) gold contains 10 parts gold and 14 parts another metal or metals, making it 41.7% gold. 10k gold is the minimum karat designation that can still be called gold in the US.