Recently, according to the official website of Guangzhou Diamond Trading Center, the national gem and jade quality supervision and Inspection Center (NGTC) updated the enterprise standard "identification and quality evaluation of synthetic diamonds" (Q / ngtc-j-sz-0001-2020 replaces Q / ngtc-j-sz-0001-2019). The standard points out that the Chinese name of synthetic diamonds is changed to "laboratory cultivated diamonds" or "synthetic diamonds". At present, NGTC has been able to issue the certificate of laboratory cultivated diamond inlaid jewelry, and it is said that it will also issue the grading certificate of laboratory cultivated diamond bare diamond in the future.
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