Carat of Gold Alloy

**Semantic type:** Quantitative Concept

**Definition:** A unit of measurement for the proportion of gold in an alloy, defining the purity of gold. Pure gold is 24 carat, whilst 18 carat gold comprises 18/24 gold and 6/24 alloy.

**Synonyms:** - Carat - Karat - [car_Au] - [car_Au] - car_Au - carat (of gold alloys) - carat of gold alloys - carat of gold alloys