Carats and karats: gold

Carats and karats are units of measurement used in the jewelry industry to describe the weight of gemstones and the purity of gold, respectively.

Part of speech: noun
Definition: In the jewelry world, 'carats' (ct) and 'karats' (kt or K) serve distinct purposes. Carats, with a 'c', are a unit of weight used specifically for gemstones and pearls, where one carat is equivalent to 0.2 grams. This measurement helps in determining the size and therefore the value of the gemstone. On the other hand, karats, spelled with a 'k', define the purity of gold. Pure gold is designated as 24 karats, meaning that 24 out of 24 parts are gold without the addition of any other metals. Gold jewelry often comes in 9K, 14K, 18K, and 22K varieties, indicating the pieces contain a certain percentage of gold mixed with other metals to enhance durability and affect color. This difference signifies the value and quality of gold in a piece, influencing both its appearance and price.