Carat (Ct) is the unit of mass (weight) of gemstones. Now 1 carat is equal to 0.2g or 200mg .. One carat is divided into 100 minute, such as 50 minutes or 0.5 carat, which is used to calculate smaller gemstones. Because the density of gems is basically the same, the heavier the gem, the bigger the volume. The bigger the gem, the rarer it is, and the higher the value per carat.
Carat, also known as Ka and Kara, has been used as an internationally recognized unit of measurement for gemstones since 1907. It is the quality unit of jade beads, diamonds and other precious stones, and the purity ratio of precious metals.
1, (the weight unit of diamonds, etc. ) carat (= 200mg)
2. (Purity unit of gold), the percent purity is 24 kHz, and if it is 18 kHz, the purity is 18/24=75%.
Extended data:
Carat (ct), usually abbreviated as Ct, has been used as an internationally recognized unit of measurement for gemstones since 1907. CT is the quality unit of jade, diamond and other precious stones, and it is the purity ratio of precious metals. International standard 4C for evaluating diamonds. 4C refers to color, clarity, weight and cut.
The word "Kela" comes from the Greek word "Kela", which refers to carobseed, a plant widely spread from East Asia to the Middle East. Because its fruit is said to have almost the same weight, and the weight of diamond is the most easily measured feature in 4c, the early carob tree was used as the weight unit of jewelry and precious metals. One carat is equivalent to the weight of a small horn tree seed.
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