To meet the sophisticated and ultra-precision cutting to the fine features of the natural single crystal diamond tool most requirements, although expensive has been recognized as the ideal precision and ultra precision cutting tool materials. It can be widely used in the processing of nuclear reactions and other high-tech areas of various mirror, missiles and rockets in the navigation gyro, computer hard disk substrate, the ultra-precision machining of accelerator electron gun, as well as traditional watch parts, jewelry, pens, non-ferrous metals decorative pieces such as precision machining. In addition, it can also be used in the manufacture of ophthalmology, brain surgery, scalpels, and ultra-thin bio-blades, and other medical tools.