Diamond is the hardest known material in the world of materials, high hardness, excellent thermal conductivity and optical performance, widely used in the tool in the field of industrial manufacturing, optical products and semiconductor industries. Its physical properties as follows:
3.515 g/cm3 density:; Hardness: Morse 10 level;

Usually as raw materials for the wire drawing die of diamond for la. Such a diamond to a certain amount of nitrogen impurities (0.1% of magnitude), and the nitrogen impurity collection became small drupelets. Also contains small pieces (associated with nitrogen impurities), the precise structure of these small pieces of the unknown at present.
The factory production of natural diamond die made from high quality natural diamond material, through strict selection, processing, and high surface finish, good wear resistance is the main