If you buy diamonds online. Because diamonds are certified, it is best to buy diamonds with GIA certificates. . Because diamonds with GIA certificates all have laser codes (below 1 carat), just like ID cards. . But the price is slightly more expensive than the diamonds inspected by the state. )。 If you want to save money. You can also buy diamonds from the national inspection. . Generally, if you suspect diamonds. . It is best to go to a nearby inspection agency for re-inspection before confirming payment. . It is best to use AliPay when trading. Safe. You can ask me any questions.