If you are buying loose diamonds online youll find much help. Most of the loose diamonds sold on the Internet will have been certified. This certification indicates that the loose diamonds have been evaluated by a professional gemology laboratory that is independent of the merchant selling the loose diamonds.
This gemology lab will use a device called a Sarin. This machine is designed to measure the diamonds precisely, looking at specific characteristics that help determine diamond value. These characteristics are its length, its width, the size of its girdle and table as well as every angle created by the diamond cutter. The second step is for the loose diamonds to be examined by trained gemologists, whose job it is to assign grades of both clarity and color. The grading system requires a highly competent diamond professional as the process has not tool or machine that offers any precision on the grading itself.
The color of loose diamonds is determined through a comparison of a control diamond group with a known color against the diamond being evaluated. The gemologist then assigns the color of the studied diamond based on its matching one of the loose diamonds...
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