How are diamonds graded? Diamond grading standard full introduction, diamond grading comparison table

Internationally, diamond grades are mainly evaluated based on diamond weight, diamond color, diamond clarity and diamond cut. However, in addition, diamond fluorescence, opalescence, caffeine, etc. are also within the diamond grading criteria. It also has a certain impact on the price. Below is an introduction to the diamond grading standards and the diamond grading table. […]

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