Diamond ring CT generally refers to the weight of the diamond on the ring. CT stands for "carat" and is called "carat" in Chinese. It is used to calculate smaller gemstones and is also one of the 4C standards for diamond identification. As a unit of measurement for gemstones, the conversion formula in current international standards is 1ct=0.2g=200mg. The larger the carat number, the heavier the diamond.
1、 Basic meaning and calculation formula of CT
Carat (Ct), commonly abbreviated as CT in English. Since 1907, it has been internationally agreed to be used as a unit of measurement for gemstones, including gemstones such as pearls, diamonds, and the purity ratio of precious metals. The international standard 4C for evaluating diamonds. 4C refers to color, clarity, weight, and cutting.
Calculation formula:
1. (Unit of weight for diamonds, etc.) Carat (=200 milligrams)
2. The purity unit of gold is K, and the percentage purity is 24 K. If it is 18 K, the purity is 18/24=75%
3. The price of diamonds is equal to the square of their weight multiplied by the basic market price of 1 carat. 1 carat=100 cents, 1 gram=5 carats. A diamond that has been cut and ground to the size of one carat
Stone requires excavating 250 tons of mineral soil to obtain, indicating the high cost of diamonds.
2、 CT weight conversion
1 gram is equal to 1000 milligrams, 1 milligrams is equal to 1000 micrograms, and the units of mass are in the thousands.
We know that gemstones are usually measured in carats, where 1 carat equals 0.2 grams, which means 1 carat equals 200 milligrams. When converted to micrograms, 1 carat is 200000 micrograms.
Also, because 1 carat equals 100 points, 1 point equals 2 milligrams, and 1 point equals 2000 micrograms.