HRD certificate

Now buy diamonds all depends on the certificate, NGTC, GIA IGI HRD. Today the author is to introduce the HRD diamond appraisal certificate. 'Diamond high-level meeting' HRD to Belgium, 霍格Raad Voor钻石) By the international diamond council ( 国际数据公司(IDC)) International negotiations for HRD diamond grading standard, HRD diamond appraisal center is carried out in accordance with the 'rules of IDC' identification. The Belgian diamond high-level parliament is officially represent the Belgian diamond trade industry. Its headquarters is located in world diamond centre of Antwerp. HRD diamond certificate in addition to a description of the shape of the diamond 形状) The size ( 双- 肯定) And weight ( 重量) , especially for cutting compared to more detailed survey report, recorded on the certificate, such as the desktop ( 表) , the thickness of the waist, 薄) , crown height, Cr. 高度) And at the bottom of the deep ( 馆, 深度) 。 As a result, are more likely to check the authenticity of certificates and diamond. Certificate of HRD in digital records, the attached cover the transparent mesh tape to prevent altered, internal or external characteristics within the certificate and wrapping paper with clarity mapping table and mark in detail. HRD measurement system using microscope inclusions, clarity grade and HRD measurement results is clarity ratio on the basis of classification table. Level code in addition to the LC, 放大镜清洁) And P level, same as the GIA. HRD diamond color certificate on set the value of colored diamonds detailed features, such as the description of the color, the color design and glowing. It for detecting respectively after the diamond is natural colored diamonds or has important status in imitation of a diamond. Each diamond certificate has a code, you can query the certificate and diamond details.