How many grams is a carat?

Best answer: 0.2 grams. Carat (Ct) is the unit of mass (weight) of gemstones, and 1 carat is equal to 0.2 g or 200 mg. A carat is divided into 100 points, such as 50 points, that is, 0.5 carat, which is used to calculate smaller gems. Because the density of gemstones is basically the same, the heavier the gemstone, the larger the volume. The bigger the gem, the rarer it is, and the higher the value per carat.

Carat (Ct) is the unit of mass (weight) of gemstones, and 1 carat is equal to 0.2 g or 200 mg. A carat is divided into 100 points, such as 50 points, that is, 0.5 carat, which is used to calculate smaller gems. Because the density of gemstones is basically the same, the heavier the gemstone, the larger the volume. The bigger the gem, the rarer it is, and the higher the value per carat. According to the research of Huaxuan householder, the unit name of Kela originated from Ghana, a West African country in the 13th century, and its capital Accra was the world’s earliest gold and diamond distribution center. Due to language communication barriers in various countries, the trading place names are used as the unit of measurement.

Carat (Ct), English carat, usually abbreviated as ct, has been used since 1907 when it was internationally agreed as the gem measurement unit. It is the quality unit of precious stones such as jewels and diamonds, and the purity ratio of precious metals. The international standard 4C .4C for diamond evaluation refers to color (color), clarity (clarity), weight (carat) and cutting.

The word Kela, derived from the Greek word Kela “keratinization”, refers to the long-horned bean tree (or rice bean observed), which is a plant widely spread from East Asia to the Middle East. Because its fruit is said to have nearly the same weight, and the weight of diamond is the easiest feature to measure in 4c, the early carob tree was used as the weight unit of jewelry and precious metals. A carat is equal to the weight of a small angle tree seed.

In 1983, Mr. Tao Zhengzhang from Chengdu Institute of Geology (now Chengdu University of Technology) made a specific study, and confirmed that carat originated from rice bean, the seed of carob tree in Mediterranean area, and the weight of this tree was about 200mg, which had nothing to do with the weight of Robinia pseudoacacia, Erythrina brucei and Sophora japonica bean. The carat weight was not standardized until the early 20th century.

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