Zhongwei Jewelry and Jade Quality Inspection Center (Guangzhou) and Guangzhou Zhongwei Jewelry and Jade Quality Inspection Co., Ltd. are registered by the administrative department for industry and commerce and authorized by Guangdong Provincial Bureau of Quality and Technical Supervision.
Guangzhou Zhongwei Jewelry and Jade Quality Inspection Center's measurement certification number is: 20 14 192285Z. Engaged in jewelry and jade inspection, undertake third-party fair inspection, independent financial accounting and testing business activities as an independent legal person.
Most of the company's inspection personnel have obtained the qualification certificates of national registered jewelry and jade inspectors and other jewelry appraisers. The company has 15 sets of jewelry testing equipment and auxiliary equipment, which can meet the needs of testing work.
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Because the level of counterfeiters is getting higher and higher, and the means are constantly improving, it is more and more difficult for collectors to distinguish between true and false. The best way is to let the merchant provide the professional appraisal certificate of the goods. Different from the antique collection market, the field of jewelry appraisal has a scientific mineralogical basis, accurate large-scale instruments and corresponding national standards promulgated and implemented.
Since 1994, the first gem and jade appraisal center in Peking University was approved, a number of appraisal institutions have been established, among which four national-level testing centers in Beijing, namely Peking University, Dida University, National Inspection Center and State-owned Assets, are large in scale and high in level.
Consumers are advised to consult or issue legally binding certificates to the most advanced professional large-scale testing institutions or registered quality inspectors recognized by the State Administration of Quality Supervision (CGC, 2065,438+02, with 65,438+0,200 people nationwide) before purchasing, so as to identify the authenticity and arbitrate disputes. Don't easily believe the self-proclaimed "experts" and irresponsible statements from unknown sources.
Fake jewelry is mainly faked in materials, and fake and inferior materials are used to pretend to be real, thus becoming one of the top-grade jewelry ranks. Professional jewelry quality inspection units identify the material of jewelry, and will not comment on the value (evaluation) and age (archaeology) of jewelry in different fields. Now some general identification and appraisal methods are introduced as follows (for reference only).
Baidu encyclopedia-jewelry appraisal