Everyone knows that gems are measured in “カラット”, そして 1 gram is equivalent to 5 カラット (CT). a 1 carat round brilliant diamond with a diameter of approximately 6.3 に 6.5 mm.
一般的に, the price of gemstones is calculated in carats. 例えば, if a ruby weighs 5 カラット, the total price is 55,000 RMB. Consumers need to pay attention to this: Merchants offer prices in carats, not just one carat. Don’t think of one carat as one!
Although the price of a gemstone is absolutely related to the size of the gemstone, it is not a two-pronged sale, nor is it that the larger the purchase, the more discounts. それどころか, as the weight of a gemstone increases, the price will increase on a geometric basis. 例えば, if a diamond of the same quality costs 22,000 カラットごとの元, how much does it cost for 2 カラット? The answer is of course not 44,000 元, but it may be 60,000 に 85,000 元, or even more. Because the bigger the gem, the rarer it is. Taking Burmese rubies as an example, the unit price of a 1 carat ruby is between 11,000 そして 33,000 元, while the total price of a 3 carat is about 44,000 に 88,000 元; the unit price of a 4 carat Burmese ruby is 55,000 に 77,000 yuan per 1 carat. In RMB, the total price may be 250,000 に 308,000 RMB, and the price difference is quite large.
一般的に, precious gems have this law, the heavier the weight, the higher the price soars. Because things are expensive, and as mining progresses, reserves are getting less and less. 加えて, only large particles have the value of preservation and appreciation, which is easy for others to speculate.
しかし, the weight of some gems has little relationship with the price difference of gems. 例えば, 1 carat and 3-5 carat topaz, basically the unit price per 1 carat does not differ too much. Usually the crystals of these gems are relatively large, the output is also large, and even the cut size and shape can be customized.