From a physical or chemical point of view, there is only one kind of diamond on this earth. Even if there are many diamond producing areas, such as South Africa, Russia, Australia and other countries, once it enters the circulation link, there is no way to distinguish the diamond producing areas.
However, the quality of diamonds is mixed. The diamond 4C grading standard provided by GIA American Gemological Institute provides a set of standardized reference for the grading of all diamonds in the world. It can be said that the value of a diamond actually depends entirely on its 4C quality: weight, color, clarity and cut. That is to say, diamonds with the same 4C parameter grade, whether Cartier's, Chow Tai Fook's or even provided by a small jewelry brand, can be said to have the same quality and actual value. As for the purchase cost, it is only because the brand value of each brand is different. After all, big brands have a high reputation, a long history and high operating and publicity costs. These high brand premiums are naturally calculated and paid by consumers in the product price.
However, in the international diamond market, the 4C parameter grade of diamond is the only criterion for diamond trading and transfer. When consumers buy it and then transfer it or take it to a bank pawnshop to realize it, the receiver will only refer to the value of the diamond itself and will not consider the brand of the diamond at all.
Therefore, if you agree with the brand value of a jewelry brand and are willing to pay for it, you can completely consider buying brand jewelry, but the quality and value of the diamond itself have been determined at the moment when the 4C parameters are determined, and it will not be more different because it is a diamond of a big jewelry brand.
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