Everyone knows that gems are measured in “carats”, et 1 gram is equivalent to 5 carats (ct). UN 1 carat round brilliant diamond with a diameter of approximately 6.3 à 6.5 MM. En général, the price of gemstones is calculated in carats. Par exemple, if a ruby weighs 5 carats, the total price is 55,000 RMB. […]
