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. […]
