We all know that the diamond shape in addition to the common round diamonds, there are a lot of different diamonds, different diamonds are diamond diamonds price factors which, because the different cut by the original stone and manpower and material resources are different So the price of its diamonds will have a little impact. Like the way the diamond cutting method can be fully used to cut the original stone, compared with the relatively less cost of the original stone compared to the same quality and weight of the round diamond is certainly more expensive than the drill. There is no exact data, but in accordance with the general understanding of the international market, generally considered the same quality conditions, the Russian workers, Belgian workers or New York workers (here refers to the quality of cut, not simply Is a regional scope concept) of diamonds with a higher unit price, while Israeli workers or Thai workers have good or medium quality cut diamonds in medium prices, while Indian cut or general cut diamonds have lower prices for the diamond market. This car workers to identify and the domestic technology industry, said the standard Huajian rules, graders and the general division of the imitation Cartier love bracelet identification of similar. According to the author’s experience in the domestic market, high-quality cut the price of diamonds than the general cut the price of diamond can be a difference of about 15% -40%, that is in the same quality of the most cases, a high-quality cut Diamonds, if the market price of $ 10,000 / ct, the general cut diamonds are often sold only 6 000-8 500 US dollars / ct. Rapaport’s diamond inquiry form on the international market is based on better cutting. Can be sure that the same quality is the diamond, the lathe will be better than the wagon to sell a higher price, as high and how much, and whether it is easier to sell, and different regional markets, the more mature market is generally The higher the degree of sensitivity of the lathe. The study of the Chinese diamond market shows that this law is also suitable for the situation in the Chinese market in 1995-1998, which also explains the current Chinese market small diamond (less than O.5ct) maximum sales quality level is the color of the JK, Clarity is the reason for VS-SI grade diamonds. Therefore, the diamonds on the Chinese diamond market and its jewelry valuation, should consider the following factors. The relationship between diamond quality and price is mainly affected by two factors. First, the quality of diamonds is the size of their own, the price range of different diamonds, and sometimes there will be a sudden change. The carat premium. Carat premium refers to the price of diamonds more than 1ct will be significantly higher than the price of diamonds below 1ct (high jump), the same quality in the n * 10 points near the location of the price of diamonds will be significantly changed, such as 0.81ct diamond price Than the price of 0.78ct on the different grades. Second, the supply and demand on the international market, if a period of time, a quality range of diamonds supply smaller, and the demand for larger, CSO may increase the price of a range of rough billet (for example, in 1996 will be more than 2ct The price increase of 7%, while the general size of the diamond rose only 3%), which directly affect the price of a market diamonds. Before the 1980s, the value of colored diamonds was not universally recognized. At the end of the 1970s, the mining of Argyle in Australia increased the supply of diamonds on the market, especially the only 0.95ct Of the pink diamonds (Hancock, Han Kaike Red Diamond), in 1987 in New York auction of $ 8.8 million high price (not count the commission), so that the world sensation, the price of each carat reached 92.06 million US dollars. While the 1989 Paris jewelry show on a 2.23ct red diamonds were also priced at $ 42 million, $ 145.5 thousand per Kata dollar price. The most special part of the color diamond is the color grading, the other and colorless diamonds are similar. The current color of the diamond color classification and similar color gem, generally based on its color, saturation and brightness to divide. In the case of color diamond grading, in addition to the requirements and white diamond grading the same environment, the general should be close to the vertical table or crown, turning diamonds to eliminate the surface reflection, dispersion or processing of the color, Showing body color and key color (key color). Body color is due to the absorption of diamonds on the light, and the key color is from the diamond table up, the observer to see the diamond is representative or true, combined with the effect of processing the color. Grading is generally based on the key colors of diamonds. In fact, different countries on the color diamond classification criteria and terminology Amulette de Cartier Bracelet Replica is not uniform, pink, for example, GIA is divided into very bright pink, bright pink, moderate red, strong / dark peach, deep peach and the deepest pink Six. While the Japanese National Gems Association will be divided into weak peach, very bright pink, variegated bright red, variegated pink four. For example, at the Pink Diamond Tender held in Geneva in September 1996, a 0.93ct oval diamond, the United States GIA that is purple diamonds, while HRD is rated as deep purple pink, the two are still some differences. At present, the study of the causes of colored diamonds continues, and the reason for the color of colored diamonds is generally believed to be that of double crystal face color, lattice skew color, plastic deformation (Argyle diamond) and natural radiation. There are a lot of artificial radiation on the market there are diamonds, so the classification of the diamond is very professional work, not the general classification staff can be completed.