A very critical task in the assessment of diamond cufflinks

Diamond cufflinks the hardest, you can characterize the corundum and any other materials, processed diamond cufflinks sharp surface edge; Diamond cufflinks refractive index, dispersion, and surface fire without light leakage; diamond cufflinks often have a yellow tone, the majority will be defective; Diamond cufflinks high heat conductivity, the available thermal conductivity meter testing. But in recent years, people have already had a new understanding to the cufflinks.  Quality assessment and evaluation, jewelry diamond cufflinks. Jewelry diamond cufflinks is the only gem of a more uniform quality evaluation criteria, the quality of the 4C standard grading. 4C is the initials of the four English words, referring to the color (Color), Clarity (Clarity), Size (Carat) and sewing (Cutting,). The following is a brief four criteria.
The assessment of the color is a very critical task in the assessment of diamond cufflinks. Generally accepted in the jewelry industry colorless diamond cufflinks is the best, yellow, brown, poor; light red, blue and green diamond cufflinks called the diamond is a precious diamond cufflinks. The diamond is still no international evaluation criteria. Color assessment of the world there are two representations of the system. To borrow the metal cufflinks as the sign of wealth has become a low-grade performance in some high-level people.  The first is determined by the Gemological Institute of America (GIA), most of the world using that method, the upcoming diamond cufflinks from colorless to pale yellow with D, E, F, Z-said, where D is a colorless, Z yellow; the other is used in mainland China and Hong Kong (34) percentile form, colorless - yellow diamond cufflinks and other figures indicated that the larger the number, the more colorless diamond cufflinks .
 The two systems standards are essentially the same, and both correspond with each other. Western D, E, F color corresponding to China's 100,99,98 color. Is generally believed that in the past, has the following 77 color not gem-quality diamond cufflinks, but the diamond point of view, such as its beautiful yellow, high transparency, it is still of great value. Know the color grading system for diamond cufflinks, many people may want to know how the diamond cufflinks color contrast and grading. People are more inclined to use cufflinks and the coordination of decoration and clothing to beautify the human body.  Assessment of diamond cufflinks color is a very delicate and complicated task, first of all, it requires the classification of the environment must be clean and white, can not have too many other non-ferrous debris, otherwise it will affect the accuracy of the classification.