Popularity with the discovery of diamonds in South Africa, diamonds used as proposal ring in the 14th century. In 1888, DE beers have try my best to buy most of the original stone for production, they are in a century monopoly market and control the diamond prices. DE beers started to dig this precious gems to widespread value, making it one of the most popular one of the things related to marriage. In 1947, its advertising campaign conveys a powerful new ideas: the purity and weight of the diamond is closely related with the eternal concept of love and truth. Its slogan is 'diamonds are forever', literally 'diamonds are forever'. Diamond assessment before choose diamond ring, it is recommended that you first consider 4 c: cut, carat, clarity, and color. Cut refers to the way of cutting stone. When it is perfect for cutting, reflected light from one side to another side and spread the light color. Expressed in carat weight. 1 carat equals 0. 20 grams, 1 carat can be divided into 100 points. 0. 75 points is equal to the 3/4 carat diamond. Diamond studs are through the defect in the visibility to assess. The less defects, the higher the value. About the color, the diamond from a to Z D color color range to evaluate. D color diamonds are colorless, the most valuable. The prices of diamonds in 2015 diamond prices will increase in the coming years. Although many people predicted gold will serve as the ultimate safe haven, but investors increasingly turned to including diamond gem. Prices investors need to be a safe investment value. Gold in all kinds of time all play a role, but the gold market has become too much. They need a price enough to withstand all kinds of economic impact of the product, and the product can be diamond. Because of its beautiful and rare, has intrinsic value, it is not subject to regional conflicts, political or economic crisis. The growth of the next few years will be better progressly, can become a long-term investment. Professionals have its value is expected growth this year of 3 to 4%. This trend is driven by growing demand. Continued demand is the most interesting part of the emerging markets, particularly China, the world's second largest diamond market. Ten years, China's enthusiasm for diamond has greatly increased. This is the result of China's middle class living standards improve. This shows that more and more couples to buy diamond engagement ring. China accounted for 13% of the world market, profit growth is even greater, and DE beers think, only 20% of urban residents with diamonds, and 70% in the United States. At the current pace of progress, the Chinese market may be more than 15 years the us market. Diamond all sorts of time are more than ever before can be used as a safe haven, not only because of the increase of demand, but also because of production is reduced. According to analyst estimates, will reach the peak in 2006, the new stores will be very scarce. Propose to learn more about the evaluation of the diamond ring, please contact diamond consultants, they will provide you with professional advice and analysis in an all-round way. You can find the most valuable diamond jewelry.