Ngic is synonymous with China Gold Inspection, and ngjc is the certificate of jewelry and jade appraisal. Generally, there are several marks such as CMA, CAL, CNAS, ILAC, etc. on the jewelry and jade appraisal certificate. As long as any one of the appraisal certificates is valid, some jewelry and jade appraisal institutions have several signs at the same time, which is equivalent to several insurances and is more effective.

If the detected jadeite is genuine, it will be marked on the inspection conclusion: jadeite (A-goods) pendant, and those jadeite not specially marked with A-goods are fakes.