使用超精密金刚石刀具非常困难，据说在形状和精度方面的改进是有限的。然而，通过超微细研磨技术，建立了晶体取向，并通过阴极发光选择宝石，从而提高了形状精度。通过在初始阶段使金刚石刀具的切削刃具有一定的形状和尺寸，初步切削和刀具寿命的不均匀性被最小化或消除。

IT IS EXTREMELY DIFFICULT TO USE ULTRA PRECISION DIAMOND CUTTING TOOLS, AND IT IS SAID THAT THERE IS A LIMIT TO IMPROVEMENTS IN THEIR SHAPES AND ACCURACIES. HOWEVER, THROUGH ULTRAMINUTE GRINDING TECHNOLOGY, THE ESTABLISHMENT OF CRYSTAL ORIENTATION AND THE SELECTION GEMSTONE BY CATHODE LUMINESCENCE IMPROVED SHAPE ACCURACY HAS BEEN ACHIEVE. BY GIVING THE CUTTING EDGE OF A DIAMOND CUTTING TOOL A CERTAIN SHAPE AND SIZE IN THE INITIAL STAGE, PRELIMINARY CUTTING AND TOOL LIFE UNEVENNESS HAVE BEEN MINIMIZED OR ELIMINATED.