Modern society, diamond is more and more popular with people, almost to the point of 'no drill don't marriage', so them as love tokens, more and more get people's attention. We buy diamond, of course, want to buy high quality diamond, but if you want to buy high quality diamond, understanding of diamond cutting level is necessary. Here the author will take you see the relevant knowledge of diamond cutting grades together. Any of a diamond jewelry has its authenticity, these instructions include the weight of the diamond, diamond and diamond cutting quality grade. These basic instructions are for the powerful guarantee of the buyer. '',' naked drill 0. 30 carat/D color/SI2 / EX here we detailed introduce diamond cutting class. The first consideration when choosing a diamond, 4 c principles, namely: color ( 颜色) And purity ( 清晰) , carat ( 克拉重量) And cutting ( 削减) 。 Diamond by a skilled a sparkling diamond cutting division can become more, can let the light of its own internal to a greater degree. This will need about cutting division cutting like look in the mirror are usually symmetric. It is because the human factors, diamond cutting grades is more important and critical. A good drill ore may because cut division of skilled is dazzing, but at the same time, it will be abandoned because of poor technology. After ideal cut diamond should present circular, clear cutting edge, can maximize the reflected light. Only good to cut a diamond, a good cut to make diamond blossom gorgeous color of fire, so the diamond cutting directly determines the quality of the diamond grade, we must pay special attention to when the choose and buy.