Traveling to South Africa, which is rich in diamonds, I bought a few diamonds in the tourist area and returned to Guangzhou for a test. I suddenly stupid and bought a low-end product. How to buy genuine diamonds? The Information Times reporter invited the Guangdong Jewelry and Precious Metals Testing Center and the GTC Jewelry Training Center in China, Guan Wanyu, to help you.
1. Try to consume as much as possible
The quality of diamonds is not really related to the origin of the diamonds. Therefore, the public should change the consumption concept of “quality and cheapness of the place of originâ€. Don't be superstitious when purchasing diamonds. It's best to base yourself on local consumption. In case of problems, you can easily complain and defend your rights.
2. Look at the test certificate
When purchasing, you should carefully check whether the product has an appraisal certificate issued by an authoritative organization. It is recommended that the public purchase goods in the formal shopping malls in order to view the relevant quality inspection reports and product marks. If there is any doubt about the quality, the evidence can be saved and the complaints can be made according to the regulations. To purchase jewelry, you must ask the merchant for the authoritative jewellery and jade identification agency. Identification certificate, one by one to compare the contents of the certificate, such as photos, quality is consistent with the physical, the signature of the appraiser, the date of identification, whether the content is correct and clear, and whether it is missing.
3. Look at the 4C standard
To judge the value of a diamond, it is necessary to look at the "4C standard": the carat weight, clarity, color, and cut of the diamond.
The level of color is from D to Z, D, E, F are the best "colorless" level; ClarityGrade (Clarity) is VS2, which means "has a very small content, unsightly (not visible to the naked eye) ", ranked 6th in 11 ranks; CutGrade (very cut), representing approximately 15% of diamond cuts, "can reflect diamonds and standard grade cuts, but The price is slightly lower, which is second only to Excellent (the ideal cut) in the 5 grades of cut.
After 4C, the certificate has additional information, namely ClarityCharacteristics and Finish. For Fluorescence in the degree of modification, the grade of the diamond is Faint (slightly fluorescent), second only to None (no fluorescence). For this reason, GIA's interpretation is that the fluorescent effect of diamond is a natural phenomenon, blue fluorescence The diamond may enhance the brightness of the diamond in the sun, and the yellow fluorescence may reduce the color of the diamond. Therefore, the fluorescent diamond should also look at which kind of light, and it may be fluorescent, which may make the diamond more beautiful.
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