karat
🇺🇸
/ˈkærət/
🇬🇧
/ˈkærət/
A unit that measures the purity of gold. Pure gold is considered 24 karats.
This ring is made of 18 karat gold, which means it's 75% pure gold.
這個戒指是由18K金製成的,這意味著它含有75%的純金。