I. IGI International Gemological Institute: IGI International Gemological Institute is the world's largest independent gemological appraisal laboratory and gemological research and education institution. During decades of appraisal, IGI has developed patented technologies such as laser lettering and darkroom photos, and initiated and popularized the 3EX cutting evaluation system. For a long time, it has been a global leader and standard setter in the field of gemology. Diamonds of all shapes and sizes are sent from all over the world to the college for analysis and classification.
Second, HRD diamond color certificate: as the name implies, observe according to the color and luster of the diamond itself. It can be said that the grade of this certificate is still very high, because they can clearly draw the quality and authenticity of a diamond by distinguishing the color, luster and luminosity, so they are authoritative, and diamonds are also very important in this world, so certificates are essential as a pass for diamonds.
Third, the diamond grading institutions in various countries: the grade of the diamond itself is easy to grade. Many developed countries have their own authoritative gem appraisal institutions. Because they want to prevent imported gems from being fake, basically every country has professional diamond grading institutions. After this classification, people can buy things better according to their own financial resources and will not make unrealistic choices. However, there are still fakes. In daily life, everyone must keep their eyes open when shopping!
Are you full of desire for diamonds? The quality of the diamond is proved by the diamond certificate, so you must look at the certificate when you buy it!