Rough diamond is an unprocessed diamond single crystal, which is made by high temperature and high pressure method. Our company can provide the size of 1mm-5mm, it has excellent properties, such as high hardness, good wear resistance, good corrosion resistance and high chemical stability, metting various application requirements of dressing tools(including single point, multi-point, rolary and roller dressers), special cutting tools and indenters, and can also be used in jewelry, handicraft and other fields of application and consumption.