fashion jewelry wholesale philippines What does emerald detection GB/T16552-16554, GB11887, GB/T18043 mean

handmade jewelry wholesale buyers SummarynHello, according to your problem description, you can find the following relevant information:nGB represents the meaning of the national standardn/T means that this standard is recommended to usenGB/T16552-16554 There are three standards here are jewelry and jade names, jewelry and jade identification, and diamond gradingnGB11887 GB/T 18043 is the measurement method and naming standard for precious metalsnThere will be these standards for general identification certificates, because most of the standards need to be used when most of the identification of jewelry and jade, all of which are operated on the standard.nConsultation record · Answer on 2021-08-27nWhat does emerald detection GB/T16552-16554, GB11887, GB/T18043 mean hello, according to your problem description, you can find the following related information: GB represents the meaning of the national standard/T represents this standard. This standard is recommended to use GB/ T16552-16554 There are three standards for jewelry and jade, respectively, jewelry and jade appraisal and diamond grading GB11887 GB/T 18043 are the measurement methods and naming standards for precious metals. These standards need to be used at time, which are operated on the reference standard. I hope my answer is helpful to you ~ I want to know that this is a real and fake straight hair read the appraisal: the state has strict qualifications for jewelry and jade quality appraisal agency. Only effective. Jewelry and jade identification certificates are often seen in three signs: CMA, CAL, and CNAS. You can also see the inspection content, including the name, color, clarity, total quality, density, refractive index and other projects of inspection products. These projects in the national certified jewelry and jade testing agency are very strict. The signature of the appraiser can also be identified. The appraisal certificate must be signed and confirmed by two appraisers. At the same time, it depends on the seal. The strict one should be steel marks, and the fonts above can be clearly identified. The Gem Appraisal Center of Peking, referred to as the Peking University Gem Identification Center, is an academic authoritative jewelry testing and appraisal agency established on the basis of the former Peking University Gemstones Appraisal Office. Back to Peking University, the highest academic university in the century -old school, the technical strength is extremely strong. Has high popularity and social and international credibility.