Ordinary buyers with insufficient eyesight can use the identification certificate to judge the quality of the jewelry to determine the collection value, but the identification certificate can only help you to more accurately understand the physical and chemical properties of the product. The beauty and value of the jewelry and jade itself must be grasped by itself. Some businesses that lack integrity now not only falsify jewelry, but also forge a jewelry identification certificate. Initial identification of the authenticity of the certificate, to seize these aspects. First of all, look at the certification mark cma, cal or cnas and other certification marks, cma must appear. The certificate contains the photo, name, color, clarity, weight, density and refractive index of the jewelry being inspected. Among them, we can judge whether the photo, weight, and appearance description are consistent with the real thing, and prevent the merchant's home certificate, but the product is transferred. The certificate usually has a stamp, the stamp of the formal certificate is deep, and the print is clear and clear. In addition, the certificate must have the signature of both the appraiser and the reviewer. It is also an important method to query through the official website, SMS, scanning QR code, etc. Of course, nowadays, large and small appraisal organizations can build their own query systems, which is not reliable. The query can only determine if the certificate is actually from the claimed authority. Finally, jewelry collectors must not simply rely on certification. The certificate issued by the authority does not fully explain the market value of the jewelry. Even worthless jewellery, even with a formal certificate, is still worthless. In particular, jade jewellery has always attached great importance to the "life experience" of the place of origin. For example, Hetian, Qinghai, Russian, and Korean materials can be collectively referred to as "Hetian jade", but the price gap is very large, and the certificate of identification cannot just prove its origin. It is always a compulsory course to hone your eyesight and focus on the market. The certificate is only to help you understand the physicochemical properties of the product more accurately. The beauty and value of jewellery itself must be grasped by itself. Wool Beanie,Pom Pom Woolen Cap,Wool Cap,Wool Knit Beanie Huhhot Hurray Accessories Co.,Ltd , https://www.hurrayaccessories.com