If it is a well-known jewelry brand such as Cartier, Tiffany, Dafu, Liu Fu, etc. Absolutely all natural diamonds. Because there is no need for merchants to destroy their brands for the benefit of one or two commodities. After all, running a brand from scratch to success and honesty first.

If it is a local brand, it depends on where you are. According to the local word-of-mouth and sales, most of them can be judged, but generally there will be no problem.

If it is a brand that is not well-known and just born, it must be carefully researched. The first thing to look at is the certificate. There is no problem with diamonds that have been certified by formal organizations and verified online. Non-natural diamonds will not issue an appraisal certificate (except for counterfeiting).

Finally, if you are not at ease, you can go to the local quality inspection center for re-inspection after purchasing the goods. Once there is a problem in the inspection, you can defend your rights according to the relevant regulations of the Consumers Association.

I hope it helps!