One carat is divided into 100, such as 50 cents, or 0.5 carat, which is used to calculate smaller gems. 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.
2 1 carat equals 4.2 grams.
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There is another interesting story about the origin of Kela. The word "Kela" comes from the Greek word "keration", which refers to carobseed, a plant widely spread from East Asia to the Middle East. Later, it was taken to the coast of North Africa by Greeks, Romans and Arabs and transplanted to India.
India was the first country to discover diamonds. Later, it was found that the seeds of this plant were almost the same size and quality, so they were used as the weight unit of jewelry and precious metals in the early days. One carat is equivalent to the weight of a small horn tree seed. Over time, carat seeds were brought to Europe by Indian businessmen because of the jewelry trade and have been handed down.
When it comes to carats, you have to say diamonds. The international standard 4C for evaluating diamonds includes carat quality, and 4C refers to color, clarity, weight (carat) and cut. On the diamond certificate, the weight of the diamond is accurate to the second decimal place, and it is full of nine into one. That is to say, if the actual quality of a diamond is 0.999ct, the certificate is written as1.00 CT; ; If the actual weight is 0.998 carat, the certificate says 0.99 carat.
Of course, no diamond dealer will cut the diamond into 0.99ct, because we all know that under the condition of similar parameters such as color, clarity and cut, the price of diamond does not increase evenly with the increase of weight, but there is a step-by-step increase, and the carat price of the whole carat diamond will suddenly increase, which is what we often call "carat premium". Therefore, although the quality of diamonds is only one point, the price of one carat is much higher than 99 points, which is a real "difference".
Diamonds can be divided into super diamonds, big diamonds, green diamonds and small diamonds according to carat weight. Extra-large diamonds refer to diamonds above 10.8 carat, large diamonds refer to diamonds between 2 and 10.8 carat, green diamonds refer to diamonds between 0.75 and 2 carat, and small diamonds refer to diamonds below 0.75 carat. ..
In addition to carats, diamonds also have "lines". "Grain" is also the quality unit of pearls. In the past, England defined the weight of a barley as 1 grain. 1 grain equals 25 points, that is, 1/4ct.
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