Wuda has passed the Metrology Certification (CMA) of the State Bureau of Quality and Technical Supervision, the National Laboratory Accreditation (CNAL), the Quality Accreditation Authorization Examination (cal) of Hubei Bureau of Quality and Technical Supervision and the accreditation of Wuhan Bureau of Quality and Technical Supervision. His inspection result is the final conclusion of jewelry and jade inspection and diamond grade evaluation in Hubei Province. It belongs to the local and national recognized diamond inspection and evaluation institutions. The certificate issued is legally binding in China.

If you have doubts about the diamond you bought, you can take it to Wu Da for re-inspection to make sure that this certificate really corresponds to the diamond you bought.

There are several small methods for personal inspection. The simplest way to distinguish glass from zircon is hardness. Diamond is the hardest substance in the known time, with the grade of 10. Draw this diamond on the glass. If we can draw traces, it will be almost the same.