Diamond grade how to diamonds level brief introduction What is the diamond level? Diamond grade levels are graded according to color, clarity, and so on. Color level: The following are the same as the " According to the diamond color change is divided into 12 consecutive color levels, with the English letters D, E, F, G, H, I, J, K, L, M, N, <N for different imitation Cartier love bracelet color levels. The following are the same as the " Color level classification rules: The following are the same as the " To be classified diamonds and a color than the same color, then the color of the color stone level to be graded diamond color level; The following are the same as the " If the color of the diamond to be classified is lower than the "N" chromite, the color level of the diamond to be graded is indicated by the lower level; The following are the same as the " The color of the diamond to be classified is between the adjacent two successive chromogenic stones, and the lower level indicates the grade of diamonds The following are the same as the " Color level; to be classified diamond color is higher than the highest level of color stone, still with the highest level that the diamond color level; to be classified diamond color is lower than the "N" color stone, then <N said. Clarity level: The following are the same as the " Is divided into LC, VVS, VS, SI, P five major levels, and subdivided into LC, VVS1, VVS2, VS1, VS2, SI1, SI2, P1, P2, P3 ten small The following are the same as the " For grades less than (excluding) 0.0940g (0.47ct) diamonds, the clarity level can be divided into five major levels. The following are the same as the " Clarity rules: The following are the same as the " LC level: 10 times magnifying glass, no diamond with internal and external features. The following conditions are still LC level: the extra facet is located in the pavilion, the crown is not visible in the original crystal face in the waist, does not affect the transparency. Inside and outside the diamond has a very slight characteristics, can be removed after a slight polished, the above situation does not affect the following level of division The following are the same as the " VVS level: 10 times magnifying glass, the diamond has a very small internal and external features, subdivided into VVS1, VVS2. Diamond has a very small internal and external features, 10 times the magnifying glass is extremely difficult to observe, as VVS1 level. Diamond has a very small internal and external features, 10 times magnifying glass is difficult to observe, as VVS2 level Where is the diamond processing? The traditional world diamond processing center is Belgium's Antwerp Antwerp, Israel's Tel Aviv Tel Aviv, New York, USA, and later Mumbai of India. From the beginning of the 20th century, China's diamond processing industry gradually developed, all kinds of various sizes of cutting processing capacity gradually increased to become a new diamond processing center. At present, China's diamond processing industry is mainly concentrated in Guangdong, Shandong and Shanghai. In the people's minds, the world's famous Replica Cartier jewelry diamond processing center is not much, mainly Belgium's Antwerp, Russia, the United States New York, Israel's Tel Aviv, India's Mumbai and other five cutting center. In fact, there are still relatively few processing capacity, mainly Belgium, Israel, the former Soviet Union, India, the United States and China. Known as the Belgian cut, the Israeli cut, although they have their own distinctive characteristics, but in the final analysis, or diamond cut the genre of the points. The Belgian Antwerp is known all over the world. Belgian diamonds include diamonds and all kinds of fancy cut diamonds, the size from 1 to 10 karats have, round drill is usually 57 faces, the ratio and degree of modification are very good. And some slightly sharpened at the bottom of a matte-like white point, to prevent diamonds when mixed rubbing damage. And can be used in the customer's need to use cold laser in its processing of diamonds marked on the mark. The United States processing diamonds automatic round machine mainly the introduction of Israel, processing diamonds, including diamonds and a variety of fancy cut diamonds, the main processing more than 1 kar of large drilling. American cut rounded round diamonds have 58 faces, polished end polished into a transparent octagonal, the edge of the grinding into a transparent facet, the United States processed diamond symmetry than the Soviet workers and Belgian workers. Israel's diamond processing industry is very developed, but the processing level is very uneven, polishing often use traditional tools. Part of the diamond's waist is more rough, symmetry is poor, pavilion shadow is very irregular, the bottom corner is deep and shallow, and thus to a certain extent, the impact of diamond fire color, processing round drill from 10 to 50 points. India's diamond processing industry currently accounts for about 50% of the world market share. India's processing of diamonds in the traditional way of home-based workshop, the number of employees nearly one million, accounting for about 90% of the global diamond practitioners. The use of semi-automatic machinery, processing out of the diamond polishing effect is not good, the waist is thick, poor symmetry, the impact of fire color. What are the world's major diamond mines? At present, 27 countries in the world have found diamond deposits, mostly in Africa, Russia, Australia and Canada. ① Africa: Southern Africa is the world's leading diamond producing region (South Africa, Namibia, Botswana, Zaire, Angola, etc.). The world's largest diamond grit in Southwest Africa Namibia, the average selling price is higher than 300 US dollars / carat, and more than 95% for the gem. The world's largest Kimberly rock (Mwadui) is famous for its rich gem-rich diamonds, located in Tanzania. The world's first discovery of the Amulette de Cartier Bracelet Replica original diamond deposit in South Africa (Premier), produced many of the world famous big diamonds such as Cullinan (3106 kt), the incomparable (999.2 kt), Janggar (726 karats). Botswana is another important diamond origin, its diamond revenue accounted for more than 70% of national export earnings, in 1999 its output value to maintain the world's first. Zaire, Botswana, South Africa, Namibia, Angola, Tanzania, Sierra Leone (more than 60 per cent of gem, with an average price of $ 173 / carat), and African countries with 63.5% of the world's total diamond reserves, The gem average is 31%. Australia: Diamonds were first discovered in Australia's Magnesium Porcelain Pore in 1979, a breakthrough in diamond mineralology, followed by more than 150 potassium-magnesium porphyry bodies in the northern part of Western Australia, which contain a certain amount of color Bright rose, pink, a small amount of blue diamonds, is a rare treasure, the average price of up to 3,000 US dollars / carat, a high degree of clarity rosy diamond weight 3.5 carat price of 3.5 million US dollars. Alghe is the world's most abundant diamond, the largest reserves of rock. Australia is currently the largest producer of diamonds, accounting for 26% of the world's reserves, of which about 5% gem. Russia: mainly distributed in the Siberian Yakut area kimberlite, although the small size, but more high-quality transparent. Canada: 1990 Kimberley-type primary ore found in the northwestern Canada near the Arctic Circle, a major breakthrough in the history of the world's diamond, also poses a threat to De Beer's monopoly. Asia and China: India is the world's first place to find diamonds, and produced the old and famous large diamond "Mughal Great", "Regent", "Queen of the Netherlands" and so on, but the current production is very low. China in 1950 for the first time in the Yuanjiang River in Hunan found the economic value of the diamond sand, good quality, gem class accounted for 40% ±, but the grade is low, scattered. 60 years in Shandong Mengyin found the original diamond mineral grade high, large reserves, but poor quality, precious stones accounted for about 12%, and the color partial yellow, and more for the industry. In the early 70s in Liaoning Wafangdian found the diamond mineral deposits, reserves, good quality, gem-level accounted for more than 50%, becoming China is Asia's largest native diamond mine (more than 100,000 karats per year). The largest one is 65 karats, with an average selling price of $ 120 per carat diamond, while the Australian diamond is priced at just a few dollars. According to the latest information, the highest ranking in the world is: Australia (40 million karats), Zaire (20 million karats), Botswana (16 million karats), Russia (12 million karats), South Africa (9 million karats), this Five countries account for 95% of the world's total output. In addition, Namibia, Angola is also an important diamond producing country