When many people buy diamonds, they always ask what kind of diamonds can preserve their value. Merchants also like to use value preservation as a gimmick, but can diamonds really preserve value? What kind of diamonds can preserve value? According to the data of Shanghai Diamond Exchange Center, the wholesale price of a single diamond in China has increased by nearly 30% in the past two years, and the wholesale price of diamonds has increased by 5% across the board this spring alone. According to this, some citizens believe that diamonds are expected to become a new means of investment and financial management, and buying diamonds can achieve stable value preservation. However, at present, there is no channel to cash the original price of the purchased diamond ornaments, and the "diamond preservation theory" has been denied in practice. According to industry insiders, in the field of jewelry, except for gold jewelry, other commodities, including diamond jewelry, are not repurchased by the state through banks.

Apart from jewelry stores, pawn shops may be the only channel for consumers to realize diamond jewelry through legal procedures. Although pawn shops accept the mortgage of diamond jewelry, the pawn money used by pawn shops to pay customers cannot be used as the basis for pawn. The appraiser should not only look at the fineness of the diamond ring, the 4C standard of the diamond, but also look at the details such as style and lettering. Usually, a 0.4-carat platinum diamond ring is pawned at 5,000-6,000 yuan, which is only one third of the market retail price.

For the current situation that diamond (jewelry) operators only sell but don't accept, Zheng Yixing, technical director of Shanghai Jewelry Testing and Appraisal Institute, believes that the retail price of a diamond jewelry not only includes the value of the diamond itself, but also has many other costs, so it is impossible for merchants to buy back from consumers at the original retail price in order to ensure their own interests. Hang Yunming, assistant to the general manager of Shanghai Luo Hui Diamond Co., Ltd. believes that the so-called "diamond preservation" can only be understood as diamond jewelry that originally sold for 1 10,000 yuan, but now it will sell for10.2 million yuan, but this price fluctuation is only reflected in the retail field. For ordinary citizens, buying diamond jewelry should be regarded as consumer goods, not hard currency that can be cashed at will. Only those wholesalers who can buy diamonds directly at international quotation and sell them at international quotation at any time are eligible to enjoy "diamond preservation".