- Karat (abbreviated as "K" or "kt") is used to measure the purity of gold. It indicates how many parts out of 24 parts of an alloy contain gold. For example, 24K gold is pure gold, while 18K gold contains 18 parts gold and 6 parts other metals.
- Carat (abbreviated as "ct") is used to measure the weight of gemstones and pearls. One carat is equal to 0.2 grams. The term carat is derived from the carob seed, which was traditionally used as a unit of weight in ancient times due to its consistent size.
It's important to note that the spelling of "karat" and "carat" is different, and they refer to different measurements in different industries.
